Packaging container

Abstract

To provide a packaging container which enables suppression of positional deviation or damage on a food product.SOLUTION: This packaging container comprises: a bottom surface part including a main surface, a plurality of recesses recessed from the main surface, and a first step higher than the main surface; a flange part that surrounds the bottom surface part and that is higher than the first step; and a side surface part that connects the bottom surface part and the flange part. The recesses include a first recess, and a second recess disposed on a straight line extending in a fourth direction sharply intersecting the extending direction of the side surface part with respect to the first recess. The first step is disposed between the second recess and the side surface part to be connected to the side surface part.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] One embodiment of the present invention relates to a packaging container. [Background technology]

[0002] In recent years, convenient and delicious ready-made meals have become so commonplace that they have become an essential part of daily life. In stores such as supermarkets and convenience stores, various foods are displayed in packaging containers. By storing food in packaging containers, it becomes possible to display multiple packaging containers stacked on top of each other, making it possible to provide food to a large number of consumers. For this reason, packaging containers of various shapes have been proposed depending on the food to be stored therein (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Design Registration No. 1546750 Summary of the Invention [Problem to be solved by the invention]

[0004] When food is placed in packaging containers in factories, it is often done manually. In this case, packaging containers with shapes that match the food are often selected to improve workability. Furthermore, such packaging containers can prevent the food from shifting or being damaged during transportation or display in stores.

[0005] In view of the above problems, one object of one embodiment of the present invention is to provide a packaging container that prevents food from shifting position or being damaged. [Means for solving the problem]

[0006] A packaging container according to one embodiment of the present invention comprises a main surface portion, a bottom surface portion including a plurality of recesses recessed from the main surface portion and a first step portion higher than the main surface portion, a flange portion surrounding the bottom surface portion and higher than the first step portion, and a side surface portion connecting the bottom surface portion and the flange portion, wherein the plurality of recesses include a first recess and a second recess arranged on a straight line extending in a fourth direction that intersects with the direction in which the side surface portion extends at an acute angle relative to the first recess, and the first step portion is arranged between the second recess and the side surface portion and connects to the side surface portion.

[0007] In the above-mentioned packaging container, the plurality of recesses may further include a third recess adjacent to the first recess in a second direction that intersects the fourth direction at an acute angle, and the first step portion may be positioned between the first recess and the third recess.

[0008] In the above-mentioned packaging container, the multiple recesses may further include a fourth recess arranged on a straight line extending in the fourth direction relative to the third recess, and may further include a second step portion arranged between the fourth recess and the side portion and connecting to the side portion.

[0009] In the above-mentioned packaging container, the second recess and the fourth recess may be arranged at a distance from the side portion in a first direction intersecting the second direction, and the first recess and the third recess may be connected to the side portion.

[0010] In the packaging container, the plurality of recesses arranged at the second direction end may be connected to the side surface portion.

[0011] In the packaging container, the side surface portion may include a first concave rib extending from the bottom surface portion to the flange portion on an outer surface of a corner portion.

[0012] In the packaging container, the flange portion may include a short side, and the short side may include a second concave rib recessed toward a third direction intersecting with the fourth direction.

[0013] In the packaging container, the flange portion may include a long side, and the long side may include a third concave rib recessed toward a third direction intersecting with the fourth direction. [Effects of the Invention]

[0014] A packaging container according to one embodiment of the present invention can prevent food from shifting out of position or being damaged. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a perspective view showing a configuration of a packaging container according to one embodiment of the present invention. [Figure 2] 1 is a top view showing the configuration of a packaging container according to one embodiment of the present invention. [Figure 3] 1 is a cross-sectional view showing the configuration of a packaging container according to one embodiment of the present invention. [Figure 4] 1 is a cross-sectional view showing the configuration of a packaging container according to one embodiment of the present invention. [Figure 5] FIG. 2 is a bottom view showing the configuration of a packaging container according to one embodiment of the present invention. [Figure 6] 1 is a side view showing the configuration of a packaging container according to one embodiment of the present invention. [Figure 7] 1 is a side view showing the configuration of a packaging container according to one embodiment of the present invention. [Figure 8] FIG. 10 is a cross-sectional view showing the configuration of a packaging container according to a modified example of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, each embodiment of the invention disclosed in this application will be described with reference to the drawings. However, the present invention can be embodied in various forms without departing from the spirit of the invention, and should not be construed as being limited to the description of the embodiments exemplified below.

[0017] In the drawings referred to in this embodiment, identical parts or parts having similar functions are designated by the same or similar reference numerals (reference numerals simply suffixed with -1, -2, etc.), and repeated explanations thereof may be omitted. Also, for convenience of explanation, the dimensional ratios of the drawings may differ from the actual ratios, and some components may be omitted from the drawings.

[0018] Furthermore, in the drawings referred to in this embodiment, mutually perpendicular axes "D1", "D2", and "D3" are depicted, with "D1" corresponding to the long side direction of the packaging container, "D2" and "D1" defining the horizontal plane of the packaging container, and "D3" corresponding to the height direction of the packaging container. The packaging container is defined as high or low by the height direction indicated by "D3", with the direction of the arrow "D3" being high or upward, and the direction opposite to the direction of the arrow "D3" being low or downward.

[0019] Furthermore, in the detailed description of the present invention, when defining the positional relationship between one component and another component, "inside" and "outside" refer to the direction toward the center of the packaging container as the inside, and the direction from the center of the packaging container toward the outside as the outside.

[0020] <1. Configuration of packaging container 1> A packaging container 1 according to one embodiment of the present invention will be described with reference to Figures 1 and 2. Figure 1 is a perspective view showing the configuration of the packaging container. Figure 2 is a top view showing the configuration of the packaging container.

[0021] As shown in Figure 2, the outer shape of the packaging container 1 is approximately rectangular in plan view (when viewing the packaging container 1 in the direction D3), with two short sides and two long sides, and corners that connect the short sides and long sides with gently sloping curves. However, the outer shape of the packaging container 1 is not limited thereto, and may be approximately square, or may be approximately polygonal, such as approximately triangular or approximately hexagonal. Furthermore, the sides that form the outer shape of the packaging container 1 may be straight or curved. The packaging container 1 can be processed into a predetermined shape using a molding method such as vacuum molding or pressure molding.

[0022] The packaging container 1 includes a bottom portion 10, side portions 20, and a flange portion 30. The bottom portion 10 is provided at the bottom of the packaging container 1. The bottom portion 10 holds food or the like contained in the packaging container 1. The flange portion 30 is provided on the upper peripheral edge of the packaging container 1. The flange portion 30 is provided so as to surround the peripheral edge of the bottom portion 10 in a plan view. The peripheral edge of the flange portion 30 is larger than the peripheral edge of the bottom portion 10 and is disposed outward from the peripheral edge of the bottom portion 10. The side portion 20 is provided so as to connect the bottom portion 10 and the flange portion 30. The side portion 20 is disposed with an inclination so as to widen outward from the bottom portion 10 to the flange portion 30. However, this is not limited thereto, and the peripheral edge of the flange portion 30 may be substantially flush with the peripheral edge of the bottom portion 10 in a plan view. In this case, the side portion 20 may be disposed vertically from the bottom portion 10 to the flange portion 30.

[0023] The packaging container 1 is molded using a resin material. The packaging container 1 is made of, for example, expanded polystyrene. By using expanded polystyrene for the packaging container 1, the container can be made lighter and can also absorb physical impacts. Other resin materials that may be used include, for example, polyester resins such as polyethylene terephthalate, and olefin resins such as polypropylene and polyethylene.

[0024] <2. Configuration of the bottom surface portion 10> The configuration of the bottom surface portion 10 of a packaging container 1 according to one embodiment of the present invention will be described with reference to Figures 1 to 4. Figures 3 and 4 are cross-sectional views showing the configuration of the packaging container. Figure 3 is a cross-sectional view of the packaging container 1 shown in Figure 2 taken along line A-A', and Figure 4 corresponds to a cross-sectional view of the packaging container 1 shown in Figure 2 taken along line B-B'. As shown in Figure 1, the bottom surface portion 10 includes a main surface 11, a plurality of recesses 110, a first step portion 120, and a groove portion 130.

[0025] The recesses 110 are recessed from the main surface 11. The recesses 110 are arranged in groups of four on four parallel lines extending in a first direction D1, with their centers aligned in the first direction D1. The recesses 110 are arranged alternately in the first direction D1, offset from each other so that each recess is located between two recesses 110 on adjacent lines. The recesses 110 are arranged in groups of two on parallel lines extending in a second direction D2 that intersects with the first direction D1. The recesses 110 are arranged in groups of two on parallel lines extending in a fourth direction D4 that intersects with the first direction D1 at an acute angle. Here, the fourth direction D4 is between the first direction D1 and the second direction D2, and is located on a horizontal plane defined by the first direction D1 and the second direction D2. The recesses 110 are arranged at the intersections of a triangular lattice.

[0026] In this embodiment, the bottom surface portion 10 has been shown to include 16 recesses 110. However, this is not limited thereto, and the number of recesses 110 may be more or less than 16. The recesses 110 may be arranged in groups of two or more on three or more parallel straight lines extending in the first direction D1. In other words, the number of recesses 110 may be six or more.

[0027] 2 shows a configuration in which the first direction D1 and the second direction D2 intersect at approximately 90°, the first direction D1 and the fourth direction D4 intersect at approximately 60°, and the second direction D2 and the fourth direction D4 intersect at approximately 30°, and the recesses 110 are arranged at the intersections of a triangular lattice. However, this is not limited thereto, and the angle at which the second direction D2 and the fourth direction D4 intersect may be greater or smaller than 30°, as long as it is an acute angle. The angle at which the second direction D2 and the fourth direction D4 intersect may be, for example, 28°.

[0028] In the packaging container 1 according to this embodiment, the plurality of recesses 110 can be arranged in an orderly manner at high density by arranging the plurality of recesses 110 at the intersections of a triangular lattice on the bottom surface portion 10.

[0029] The recesses 110 hold food or the like contained in the packaging container 1. Therefore, the shape of the recesses 110 preferably reflects part of the shape of the food or the like contained in the packaging container 1. The recesses 110 may be, for example, substantially hemispherical to match the spherical shape of meatballs, dumplings, and fishcakes. The depth b of the recesses 110 from the main surface 11 is greater than half the radius r / 2 of the recesses 110 and less than the radius r. However, this is not limited thereto, and the depth b of the recesses 110 from the main surface 11 may be, for example, greater than half the radius r / 2 of the recesses 110 and less than the diameter 2r. Here, the radius r refers to the radius of the recesses 110 on the main surface 11, and the depth b refers to the distance from the main surface 11 to the inner bottom surface of the recesses 110. The depth b of the recesses 110 from the main surface 11 may be, for example, 12.9 mm ± 0.3 mm.

[0030] In the packaging container 1 according to this embodiment, the depth b of the recess 110 from the main surface 11 is greater than half the radius r / 2, which can prevent the food contained in the packaging container 1 from shifting position. The depth b of the recess 110 from the main surface 11 is smaller than the diameter 2r, which can improve the ease of removing the food contained in the packaging container 1.

[0031] The plurality of recesses 110 arranged at the end in the first direction D1 may be continuously connected to the side surface portion 20. The plurality of recesses 110 arranged at the end in the second direction D2 may be continuously connected to the side surface portion 20.

[0032] The bottom surface portion 10 includes a first step portion 120 between the main surface 11 and the side surface portion 20. The first step portion 120 is higher than the main surface 11. The first step portion 120 includes a planar space. The first step portion 120 is disposed between the side surface portion 20a extending in the short side direction at the end of the first direction D1 and a second recess 110b of the multiple recesses 110, and is continuously connected to the side surface portion 20a. The second recess 110b is disposed adjacent to the first recess 110a on a straight line extending in the fourth direction D4 that intersects at an acute angle with the direction in which the side surface portion 20a extends. The second recess 110b is disposed adjacent to the first recess 110a on a straight line extending in the fourth direction D4 that intersects at an acute angle with the first direction D1.

[0033] The first step portion 120 is disposed between the first recess 110a and the third recess 110c of the multiple recesses 110. The third recess 110c is disposed adjacent to the first recess 110a on a straight line extending in the second direction D2. In other words, the second recess 110b is disposed adjacent to the side surface portion 20a at the end of the first direction D1 across the first step portion 120, and is disposed in the middle of the three recesses (the first recess 110a, the second recess 110b, and the third recess 110c) that are lined up at the vertex of the zigzag line in the second direction D2. The second recess 110b is disposed away from the side surface portion 20a at the end of the first direction D1. When the first recess 110a, the second recess 110b, and the third recess 110c are not to be distinguished from one another, they are referred to as recesses 110.

[0034] In the present embodiment, the bottom surface portion 10 has a configuration including two first step portions 120, one at each end in the first direction D1. However, the present invention is not limited to this, and the number of first step portions 120 may be one.

[0035] 3 and 4, the height a of the first step portion 120 from the main surface 11 is less than the height h of the flange portion 30 from the main surface 11. The height a of the first step portion 120 is preferably greater than the thickness of the bottom surface portion 10 and less than h / 2, for example. The height a of the first step portion 120 may be, for example, 4.18 mm±0.3 mm.

[0036] In the packaging container 1 according to this embodiment, the height a of the first step 120 is greater than the thickness of the bottom surface 10, making it easy to see when food contained in the packaging container 1 has been mistakenly placed on the first step 120, and preventing the food from shifting position. Because the first step 120 includes a flat space, it is possible to mark the outer surface, for example, as shown in Fig. 5, thereby improving convenience.

[0037] The bottom surface portion 10 includes grooves 130 that connect adjacent recesses 110. The grooves 130 may connect all of the recesses 110. The grooves 130 may be arranged in a triangular lattice pattern.

[0038] 4, the depth c of the groove 130 from the main surface 11 is smaller than the depth b of the recess 110 from the main surface 11. The depth c of the groove 130 is preferably greater than the thickness of the bottom surface 10 and smaller than the depth b of the recess 110, for example. The depth c of the groove 130 may be, for example, 2.5 mm±0.3 mm.

[0039] By including the groove portion 130, the packaging container 1 according to this embodiment can improve the strength of the packaging container 1.

[0040] 3. Configuration of side surface portion 20 The configuration of the side surface portion 20 of the packaging container 1 according to one embodiment of the present invention will be described with reference to Fig. 5. Fig. 5 is a bottom view showing the configuration of the packaging container.

[0041] As shown in FIG. 5 , the side surface portion 20 includes a plurality of first concave ribs 210. The plurality of first concave ribs 210 are respectively arranged on the outer surfaces of the four corners where the short sides and long sides intersect. The first concave ribs 210 extend in a line from the bottom surface portion 10 to the flange portion 30. The depth of the first concave ribs 210 is shallower than the thickness of the side surface portion 20, and the width of the first concave ribs 210 is narrower than the thickness of the side surface portion 20. The shape of the first concave ribs 210 is not reflected on the inner surface of the side surface portion 20.

[0042] In this embodiment, the side surface portion 20 has four first concave ribs 210 at each corner, but is not limited to this and the number of first concave ribs 210 may be more or less than four.

[0043] The packaging container 1 according to this embodiment includes a plurality of first concave ribs 210, which allows air to escape easily when multiple packaging containers 1 are stacked, preventing blocking and improving usability.

[0044] 4. Configuration of flange portion 30 The configuration of the flange portion 30 of the packaging container 1 according to one embodiment of the present invention will be described with reference to Figures 2, 6 and 7. Figures 6 and 7 are side views showing the configuration of the packaging container.

[0045] 2 and 6, the flange portion 30 includes two long sides 32 and two short sides 31 extending in the first direction D1. The short sides 31 of the flange portion 30 include a plurality of second concave ribs 310. The plurality of second concave ribs 310 are recessed toward the third direction D3.

[0046] In this embodiment, the flange portion 30 has a configuration including two second concave ribs 310 on each side. However, this is not limited to this, and the number of second concave ribs 310 may be more or less than two.

[0047] The packaging container 1 according to this embodiment includes a plurality of second concave ribs 310, and thus the strength of the packaging container 1 can be improved.

[0048] 2 and 7, the long side 32 of the flange portion 30 includes third concave ribs 320. The plurality of third concave ribs 320 are recessed in the third direction D3.

[0049] In this embodiment, the flange portion 30 has a configuration including one third concave rib 320 on each side, but is not limited to this, and the number of third concave ribs 320 may be more than two.

[0050] The packaging container 1 according to this embodiment includes a plurality of third concave ribs 320, and thus the strength of the packaging container 1 can be improved.

[0051] <5. Configuration of Modified Examples> The packaging container of this modified example will be described with reference to Fig. 8. Fig. 8 is a cross-sectional view showing the configuration of the packaging container of the modified example, and corresponds to a cross-sectional view of the packaging container 1 shown in Fig. 2 cut along B-B'. The packaging container of this modified example has the same configuration as this embodiment except that it further includes a second stage portion. Explanations of the same things as this embodiment will be omitted, and only the parts that differ from this embodiment will be described here.

[0052] The bottom surface portion 10 may further include a second step portion 122 between the main surface 11 and the side surface portion 20. The second step portion 122 is higher than the main surface 11. The second step portion 122 may include a flat space. The second step portion 122 is disposed between the side surface portion 20a at the end in the first direction D1 and a fourth recess 110d among the multiple recesses 110, and is continuously connected to the side surface portion 20a. The fourth recess 110d is disposed adjacent to the third recess 110c on a straight line extending in the fourth direction D4. In other words, the fourth recess 110d is disposed adjacent to the side surface portion 20a at the end in the first direction and is the fourth of the four recesses (the first recess 110a, the second recess 110b, the third recess 110c, and the fourth recess 110d) that are lined up at the vertices of the zigzag line in the second direction. The fourth recess 110d is disposed away from the side surface portion 20a at the end in the first direction. When the first recess 110a, the second recess 110b, the third recess 110c, and the fourth recess 110d are not to be distinguished from one another, they will be referred to as recess 110.

[0053] In this modified example, the bottom surface portion 10 includes two second step portions 122, one at each end in the first direction D1. However, this is not limited to this, and the number of second step portions 122 may be one.

[0054] 8, the height d of the second step portion 122 from the main surface 11 is less than the height h of the flange portion 30 from the main surface 11. The height d of the second step portion 122 is preferably greater than the thickness of the bottom surface portion 10 and less than h / 2, for example. The height d of the second step portion 122 may be approximately the same as the height a of the first step portion 120. The height d of the second step portion 122 may be, for example, 4.18 mm±0.3 mm.

[0055] In the packaging container 1a according to this embodiment, the height d of the second step portion 122 is greater than the thickness of the bottom surface portion 10, and therefore the strength of the packaging container 1a can be improved.

[0056] Even if there are other effects and advantages different from those brought about by the aspects of the above-described embodiments, those that are clear from the description in this specification or that can be easily predicted by a person skilled in the art are naturally understood to be brought about by the present invention. [Explanation of symbols]

[0057] 1 packaging container, 10 bottom surface portion, 20 side surface portion, 30 flange portion, 31 short side, 32 long side, 110 recessed portion, 120 first step portion, 122 second step portion, 130 groove portion, 210 first recessed rib, 310 second recessed rib, 320 third recessed rib

Claims

1. a bottom surface portion including a main surface portion, a plurality of recesses recessed from the main surface portion, and a first step portion higher than the main surface portion; a flange portion that surrounds the bottom surface portion and is higher than the first step portion; a side surface portion connecting the bottom surface portion and the flange portion, the plurality of recesses include a first recess and a second recess arranged on a straight line extending in a fourth direction intersecting the direction in which the side surface portion extends at an acute angle with respect to the first recess, The first step portion is disposed between the second recess and the side surface portion and connects to the side surface portion.

2. the plurality of recesses further includes a third recess that is adjacent to the first recess in a second direction that intersects with the fourth direction at an acute angle, The packaging container according to claim 1 , wherein the first step is disposed between the first recess and the third recess.

3. the plurality of recesses further include a fourth recess that is arranged on a straight line extending in the fourth direction relative to the third recess, The packaging container according to claim 2 , further comprising a second step portion disposed between the fourth recess and the side surface portion and connecting to the side surface portion.

4. The packaging container according to claim 3, wherein the second recess and the fourth recess are arranged at a distance from the side portion in a first direction intersecting the second direction, and the first recess and the third recess are connected to the side portion.

5. The packaging container according to claim 4 , wherein the plurality of recesses arranged at the second direction end are connected to the side surface portion.

6. The packaging container according to claim 1 , wherein the side surface portion includes a first concave rib extending from the bottom surface portion to the flange portion on an outer surface of a corner portion.

7. The flange portion includes a short side, The packaging container according to claim 1 , wherein the short side includes a second concave rib recessed toward a third direction intersecting the fourth direction.

8. The flange portion includes a long side, The packaging container according to claim 1 , wherein the long side includes a third concave rib recessed in a third direction intersecting the fourth direction.

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