JP6522973B2 - Packaging container - Google Patents

Description

  The present invention relates to a packaging container that can be transported or displayed by packing sugar beet, rice and the like and stacking them in multiple tiers.

  2. Description of the Related Art Conventionally, packaging containers comprising a container main body for storing sugar beet, rice and the like and a lid which can be fitted to the container main body are used in supermarkets, convenience stores and the like. And since this packaging container is densely stacked up and down, right and left, conveyed and displayed, it is necessary to reinforce so that a container main part and a lid may not be crushed.

  For example, the packaging container of Patent Document 1 is a packaging container including a container main body and a lid, and the corner portion of the lid is provided with a reinforcement recess. By this reinforcing recess, it is possible to prevent the corner portion from being crushed by force applied to the corner portion when another object abuts on the corner portion during transportation and display operation of the packaging container.

  Further, the packaging container of Patent Document 2 is a packaging container comprising a container main body and a lid, which is gradually expanded to the lower end of the lid side wall, starting from the peripheral edge of the top plate of the lid. A substantially V-shaped lid concave groove is provided. The lid concave groove can sufficiently withstand the vertical compressive load when the packaging containers are stacked.

  Further, the packaging container of Patent Document 3 or Patent Document 4 is a packaging container comprising a container body and a lid, and reinforcing ribs (or pots) are alternately (or potted) on the side surface of the container body. , Zig-zag shaped). As a result, the strength of the container body is improved, and it is possible to withstand the compressive load in the vertical direction.

  And although the packaging container of the said patent document 1 to patent document 4 reinforces a cover body and a container main body, external force concentrates on the top surface and the side surface of the step part of a cover body, and these are crushed. Was not aware of this problem and could not solve this problem fundamentally.

Patent 2750501 JP 2012-240750 Patent No. 5537884 Patent 5002305

  Therefore, in view of the above problems, the present invention provides a packaging container in which the periphery of the shoulder of the lid is not easily crushed.

  In order to solve the above problems, a packaging container according to claim 1 of the present invention is sheet-formed, comprising a top surface, a step portion continuous from the top surface, and a side surface continuous from the step portion. It is a container for packaging provided with a lid part and a sheet-shaped main part which the lid part can fit, and the above-mentioned step has the step side which goes down from the top surface, and the side of the step concerned. From the side surface of the step from the side, the upper reinforcing portion is formed on a part of the side surface of the step, and the lower reinforcing portion at least a part of which can be elastically deformed is formed on the side surface, The upper reinforcement portion and the lower reinforcement portion may be spaced apart from each other with the bottom surface of the step portion interposed therebetween.

  According to the above feature, by providing the upper reinforcing portion on the side surface of the step portion of the step portion, the step portion is reinforced, so that the step portion is easily deformed even if an external force is applied from the upper direction and the lateral direction. There is no. In addition, even if the external force is large and the step is deformed, the step can be restored to the original state before the deformation by the restoring force of the lower reinforcing portion at least a part of which can be elastically deformed.

  In addition, since the upper reinforcing portion and the lower reinforcing portion are disposed apart from each other with the bottom of the step portion interposed therebetween, there is no contact point with each other, and no bending starting point occurs at the time of deformation. As a result, the shoulders do not easily collapse.

Furthermore, the packaging container according to claim 1 of the present invention is characterized in that the lower reinforcing portion is configured to be elastically deformed more easily at the upper side than at the lower side.

  According to the above feature, the upper side closer to the step is more easily elastically deformed, so that the force applied to the periphery of the step is effectively absorbed, and the step is restored to its original state flexibly and reliably. It can be done.

Furthermore, the packaging container according to claim 2 of the present invention is characterized in that the upper reinforcing portion and the lower reinforcing portion are alternately disposed sandwiching the bottom surface of the step portion.

  According to the above-mentioned feature, when external force is applied, forces generated respectively from the upper reinforcement portion and the lower reinforcement portion are not easily joined on the bottom surface of the step portion, and a bending starting point is hardly generated.

Furthermore, the packaging container according to claim 3 of the present invention is characterized in that the upper reinforcing portion is formed so as to extend from the side surface of the step portion to the top surface.

  According to the above-described feature, since the periphery of the edge of the top surface is reinforced by the extended upper reinforcement portion, it is possible to prevent the edge from being bent.

Furthermore, the packaging container according to claim 4 of the present invention is characterized in that the cross-sectional shape of the bottom of the step portion is a curved shape.

  According to the above-mentioned feature, when external force is applied and it is deformed, it is difficult to form a place where the force is concentrated on the bottom of the step, and it is difficult to generate a starting point of bending.

  In the packaging container of the present invention, even when an external force is applied from the upper direction and the lateral direction, the periphery of the step of the lid is unlikely to be crushed.

(A) is a top view of the cover part of the packaging container of this invention, (b) is an AA end view. (A) is a top view of the main-body part of the packaging container of this invention, (b) is a BB end elevation. The end view of the packaging container of the state which fitted the lid part shown in FIG.1 (b) and the main-body part shown in FIG.2 (b) is shown, (a) is the state which piled up the said packaging container. An end elevation, (b) is an end elevation which expanded the step area periphery in the state which piled up the container for packing concerned concerned. (A) is the top view to which the upper reinforcement part and lower reinforcement part periphery of the lid part of the packaging container of this invention shown to FIG. 1 (a) were expanded, (b) is a CC end view. . In the state shown in FIG.4 (b), it is an end elevation which shows a mode that external force was added from upper direction. In the state shown in FIG.4 (b), it is an end elevation which shows a mode that external force was added from the horizontal direction. In the state shown to Fig.4 (a), it is the top view which showed notionally distribution of the force at the time of applying external force from upward direction or a horizontal direction.

Reference Signs List 100 lid portion 110 top surface 120 step portion 121 step portion side surface 122 step portion bottom surface 130 side surface 160 upper reinforcement portion 170 lower reinforcement portion 200 main body portion 300 packaging container

  Hereinafter, embodiments of the present invention will be described using the drawings. In the present specification, the term "upper" refers to the upward direction in the vertical direction when placed on a horizontal surface with the opening surface of the main body of the packaging container facing up, "downward". Is the downward direction in the vertical direction.

  First, FIG. 1 shows a lid 100 of a packaging container 300 of the present invention. As shown in the figure, the lid portion 100 has a shallow dish shape opened downward, and a top surface 110 having a generally oblong octagonal shape (generally oval shape) in plan view and a step continuous from the top surface 110 downward. It has the part 120 and the side 130 continuous from the said step 120 downward. A fitting convex portion 140 is provided at the lower end portion of the side surface 130, and a lid flange portion 150 extending in a substantially horizontal direction is further provided outside the fitting convex portion 140. Further, the step portion 120 includes a step side surface 121 extending downward from the edge portion 111 of the top surface 110 and a step bottom surface 122 extending laterally from the step side surface 121. The stepped portion 120, the side surface 130, the fitting convex portion 140, and the lid flange portion 150 are continuously provided along the entire circumferential direction of the lid portion 100.

  In addition, upper reinforcements 160 and lower reinforcements 170 are provided at four corners of the four corners of the lid 100 and on the long side. The upper reinforcement portion 160 is formed on a part of the step side surface 121, and the lower reinforcement portion 170 is formed on the side surface 130. The upper reinforcement portion 160 and the lower reinforcement portion 170 sandwich the step bottom surface 122 with each other. They are spaced apart.

  In addition, the formation location of the upper side reinforcement part 160 and the lower side reinforcement part 170 is not limited to the corner part by the side of the long side of the cover part 100, You may form in the arbitrary places of the periphery of the cover part 100 . However, as in the present embodiment, if the lid 100 has a shape having long sides and corner portions such as a substantially horizontal octagon (generally oval) in plan view, the lid 100 is elongated by an external force from above. The center on the side is easily bent, so cracking and whitening hardly occur. Further, since the corner portion is formed to be curved, the rigidity is higher than that of the long side, and the corner portion is a portion which is not easily bent. On the other hand, since the corners near the corners on both sides of the long side center are close to the corner portions that are hard to bend, they can not be easily bent and there is no rigidity like the corner portions, so cracks and Whitening is particularly likely to occur. Therefore, by forming the upper reinforcement portion 160 and the lower reinforcement portion 170 at the corner portions on the long side of the lid portion 100, deformation can be effectively prevented.

  Next, FIG. 2 shows the main body 200 of the packaging container 300 of the present invention. As shown in the figure, the main body portion 200 has a shallow dish shape opened upward, and stands up from the bottom wall 210 of a generally oblong octagon (generally oval shape) in plan view and the end of the bottom wall 210. And the side wall 220 formed. At a corner portion of the bottom wall 210, a leg portion 211 protruding downward from the bottom wall 210 is provided. Further, a fitting recess 230 is provided at the upper end of the side wall 220, and a main body flange portion 240 extending substantially horizontally is provided outside the fitting recess 230. The side wall 220, the fitting recess 230, and the main body flange portion 240 are continuously provided along the entire circumferential direction of the main body portion 200.

  The lid portion 100 and the main body portion 200 according to the present embodiment use a sheet-like material capable of sheet forming (for example, vacuum forming, pressure forming, hot plate forming). As the material, A-PET, transparent biaxially oriented polystyrene (OPS), or polypropylene (PP) is used as the material of the main body 200 so as to ensure the visibility of the contents and to have appropriate elasticity. , A-PET, filled polypropylene (PPF), or polystyrene (PS) can be used. In addition, although the lid portion 100 and the main body portion 200 have an elliptical shape in a plan view, other than this, for example, a substantially circular shape in a planar view, a polygonal shape in a plan view, etc. can be appropriately changed.

  Next, the packaging container 300 in a state in which the lid 100 shown in FIG. 1 is covered with the main body 200 shown in FIG. 2 will be described with reference to FIG. Further, FIG. 3 shows a state in which the packaging containers 300 are stacked.

  As shown in FIG. 3A, the fitting convex portion 140 of the lid portion 100 is internally fitted in the fitting concave portion 230 of the main body portion 200 over the entire circumference of the outer periphery of the packaging container 300. There is no leakage of contained items etc. Moreover, since the lid flange portion 150 of the lid portion 100 and the main body flange portion 240 of the main body portion 200 are in close contact with each other and there is no gap, the lid portion 100 will not be removed carelessly. Foreign matter such as dust is difficult to invade.

  Next, FIG. 3B shows a state in which the periphery of the step portion 120 is enlarged when the packaging containers 300 are stacked, and is stacked on the step portion 120 of the lid portion 100. The legs 211 of the other packaging container 300 are placed. Specifically, the leg side surface 212 of the leg portion 211 abuts on the step side surface 121 of the step portion 120, and the leg bottom surface 213 of the leg portion 211 abuts on the step bottom surface 122 of the step portion 120. The other upper packaging containers 300 are stacked stably without shifting in the left-right direction.

  In the present embodiment, the lid portion 100 and the main body portion 200 of the packaging container 300 are internally fitted, but the present invention is not limited thereto. The lid portion 100 and the main body portion 200 may be fitted by a combination. Moreover, although the leg part 211 of the other container 300 for packaging is mounted in the step part 120 in this embodiment, it is not limited to this. That is, when the stacking method of the packaging container 300 is different, the leg portion 211 may not be placed on the step portion 120, and the step portion 120 merely constitutes a part of the design of the lid portion 100. It may be one.

  Next, the configuration of the upper reinforcement portion 160 and the lower reinforcement portion 170 of the present invention will be described in detail with reference to FIG.

  First, the upper reinforcement portion 160 has a concave shape that is recessed inward. Furthermore, the upper reinforcement portion 160 is configured of a lower end portion 161 formed on the step side surface 121 and an upper end portion 162 formed to extend from the lower end portion 161 to the top surface 110, and the lower end portion 161. The upper end portion 162 is formed as a continuous single groove. Further, as shown in FIG. 4B, the lower end portion 161 and the upper end portion 162 act as a single substantially L-shaped rib, so that an edge portion which is a continuous portion between the top surface 110 and the step portion 120 It reinforces around 111.

  Next, the lower reinforcement portion 170 has a long concave shape that is recessed inward, and can be elastically deformed by an external force. The lower reinforcing portion 170 is composed of a lower end portion 171 and an upper end portion 172, and the lower end portion 171 and the upper end portion 172 are formed as a continuous single groove. Furthermore, as shown in FIG. 4A, the lower reinforcing portion 170 is formed so that the width of the groove gradually narrows from the lower end portion 171 to the upper end portion 172. Further, as shown in FIG. 4B, the lower reinforcing portion 170 is formed so that the depth of the groove gradually decreases from the lower end portion 171 to the upper end portion 172. Therefore, the upper end portion 172 on the upper side is lower in rigidity and easier to be elastically deformed than the lower end portion 171 on the lower side. In other words, the lower end portion 171 on the lower side is unlikely to be elastically deformed, and the upper end portion 172 on the upper side is easily elastically deformed.

  As described above, the upper end portion 172 is formed by a simple method of gradually narrowing the width of the groove from the lower end portion 171 toward the upper end portion 172 or gradually reducing the depth of the groove. However, it is possible to easily realize a configuration in which the lower end portion 171 is more easily elastically deformed. Also, the present invention is not limited thereto. For example, the thickness of the material constituting the lower end 171 is increased, and the thickness of the material constituting the upper end 172 is decreased, whereby the upper end 172 is more elastic than the lower end 171 You may implement | achieve the structure which is easy to deform | transform.

  Furthermore, a part of the lower end portion 171 is bent in a direction different from that of the upper end portion 172, and rigidity is high, so that elastic deformation is more difficult. Therefore, the configuration in which the upper end portion 172 is easily elastically deformed compared to the lower end portion 171 becomes more remarkable.

  Further, as shown in FIG. 4A, the three upper reinforcements 160 are formed at equal intervals on the step side surface 121 of the step 120, and the three lower reinforcements 170 are arranged at equal intervals on the side 130. It is formed. The upper reinforcement portion 160 and the lower reinforcement portion 170 are vertically spaced apart from each other across the step bottom surface 122 without contacting each other. Furthermore, the upper reinforcing portion 160 and the lower reinforcing portion 170 are alternately arranged on both sides of the step bottom surface 122 along the circumferential direction of the lid 100 when the lid 100 is viewed in plan. In other words, when the lid 100 is viewed in a plan view, the upper reinforcement portion 160 and the lower reinforcement portion 170 are not arranged on the same straight line, that is, in a straight line.

  A plurality of upper reinforcements 160 and lower reinforcements 170 may be formed, but if the number is too large, the visibility of the inside of the container is reduced, so 1 to 8 are preferable for one corner portion. . Although the upper reinforcement portion 160 and the lower reinforcement portion 170 have a concave shape that is recessed inward, any shape that can reinforce the formed portion may be used. For example, the upper reinforcement portion 160 and the lower reinforcement portion 170 may have a convex shape that bulges outward.

  Next, with reference to FIG. 5 and FIG. 6, the effects of the upper reinforcement portion 160 and the lower reinforcement portion 170 will be described in detail.

  First, in FIG. 5, for example, when an external force F is applied from above by the weight of the content in the main body portion 200 of the other packaging container 300 when the other packaging container 300 is stacked up. Is assumed.

  When an external force F is applied to the top surface 110 from above, as shown in FIG. 5, the top surface 110 is deformed so as to curve downward. And although the step part 120 tends to curve below so that it may be pulled by this top surface 110, since the step part 120 is reinforced by the upper side reinforcement part 160, it becomes difficult to deform | transform.

  However, as shown in FIG. 5, when the external force F is large, the step portion 120 is slightly deformed so as to sink inside the lid portion 100. Then, although the upper end portion 172 side of the lower reinforcing portion 170 is pulled by the step portion 120 and elastically deformed downward, the one lower end portion 171 side is hardly elastically deformed. As a result, the straight lower reinforcing portion 170 (see FIG. 4B) before deformation is elastically deformed in an arch shape expanding outward as shown in FIG. 5 by the external force F applied from the upper side. And in this lower reinforcing portion 170 elastically deformed in an arch shape, a restoring force to return to the original state is applied.

  Thereafter, when the external force F is removed, the lower reinforcing portion 170 is restored to the original state of the lower reinforcing portion 170 by the linear lower reinforcing portion 170 before deformation (FIG. 4B). Return to Then, the step portion 120 sunk downward is returned to the original state (see FIG. 4B) by being pushed up to the upper end portion 172 of the lower reinforcing portion 170.

  Then, referring to FIG. 6, for example, when a person picks up the container for packaging 300, the step portion 120 of the lid portion 100 and the side surface 130 around the step portion 120 are pinched with a finger, Assume that the external force F is applied from the direction.

  As shown in FIG. 6, even if an external force F is applied to the periphery of the step portion 120 in the lateral direction, the step portion 120 is reinforced by the upper reinforcement portion 160, so it is difficult to deform.

  However, when the external force F is large, the step portion 120 slightly deforms so as to sink inside the lid portion 100. Then, the upper end portion 172 side of the lower reinforcing portion 170 is pulled downward. Furthermore, since the external force F presses the upper end portion 172 side of the lower reinforcing portion 170 inward, the upper end portion 172 elastically deforms inward, but the one lower end portion 171 side hardly elastically deforms. As a result, the straight lower reinforcing portion 170 (see FIG. 4B) before deformation is elastically deformed into an arch shape which bulges inward as shown in FIG. 6 by the external force F applied from the lateral direction. . And in this lower reinforcing portion 170 elastically deformed in an arch shape, a restoring force to return to the original state is applied.

  Thereafter, when the external force F is removed, the lower reinforcing portion 170 is restored to the original state of the lower reinforcing portion 170 by the linear lower reinforcing portion 170 before deformation (FIG. 4B). Return to Then, the step portion 120 sunk downward is returned to the original state (see FIG. 4B) by being pushed up to the upper end portion 172 of the lower reinforcing portion 170.

  Thus, according to the present invention, by providing the upper reinforcing portion 160 on the step side surface 121 of the step portion 120, the step portion 120 is reinforced, so that an external force F is applied from the upper direction and the lateral direction. The step portion 120 is not easily deformed and crushed. Further, even if the external force F is large and the step portion 120 is deformed, the step portion 120 is restored to the original state before the deformation by the restoring force of the lower reinforcing portion 170 at least a part of which can be elastically deformed.

  Further, as shown in FIGS. 5 and 6, the upper reinforcement portion 160 is formed at the step side surface 121, and the lower reinforcement portion 170 is formed at the side surface 130, respectively. The upper reinforcement portion 160 and the lower reinforcement portion 170 are deformed in different ways. Therefore, if the upper reinforcing portion 160 and the lower reinforcing portion 170 are in contact with each other, the contact portion becomes a starting point of bending. In addition, if the extension direction of the upper reinforcement portion 160 and the extension direction of the lower reinforcement portion 170 are formed on the same straight line, the same straight line becomes a “fold” and becomes a bending origin.

  However, in the present invention, the upper reinforcement portion 160 and the lower reinforcement portion 170 are disposed apart from each other with the step bottom surface 122 interposed therebetween, and there is no contact point, so that a bending origin to be a "fold" occurs. There is no Furthermore, since the respective extension directions are not on the same straight line, it is possible to more effectively prevent the occurrence of the origin of bending which is a "fold".

  Furthermore, the lower reinforcing portion 170 is configured as an integral recess so that the upper end portion 172 on the upper side is more easily elastically deformed than the lower end portion 171 on the lower side. Thereby, the upper end portion 172 can be elastically deformed and the external force F applied around the step portion 120 can be effectively absorbed. On the other hand, the lower end 171 is less likely to be elastically deformed as compared with the upper end 172 and is formed as an integral recess of the upper end 172, so the absorbed external force F is reduced to the restoring force of the upper end 172. Excessive deformation of the entire reinforcing portion 170 can be prevented.

  Further, in the lower end portion 171 which is difficult to elastically deform, a stronger restoring force is exerted than the upper end portion 172 which is easily elastically deformed. Therefore, when the step portion 120 sunk inside the container returns to the original state, the step portion 120 is flexibly pushed up and restored by the restoring force of the upper end portion 172, and the stronger lower end portion 171 It is supported by the resiliency of and can be restored reliably. That is, the upper end portion 172 near the step portion 120 is more easily elastically deformed, so that the force applied to the periphery of the step portion 120 is effectively absorbed, and the step portion 120 returns to the original state in a flexible and sure manner. It is possible to

  Furthermore, the upper end portion 162 of the upper reinforcement portion 160 is formed so as to extend from the step side surface 121 to the top surface 110. Therefore, as shown in FIGS. 5 and 6, when an external force F is applied, the periphery of the edge 111 of the top surface 110 is reinforced by the upper end 162 of the upper reinforcement 160, and the edge 111 is not bent. It is

  Furthermore, the cross-sectional shape of the step bottom surface 122 of the step 120 is curved. That is, as shown in FIG. 5 and FIG. 6, when the step bottom surface 122 is curved to draw a substantially S-shaped curve, when external force F is applied and deformed, the force is concentrated on the step bottom surface 122 It is difficult to make a place to do, and it is hard for the origin of bending to occur.

  Here, an example of each element of the present invention will be described with specific numerical values. First, the upper end portion 162 of the upper reinforcing portion 160 is formed to extend from the step side surface 121 of the step portion 120 to the top surface 110, but the length extended from the step side surface 121 is 6 mm or less Is preferred. Here, since the extension portion is formed inside the outer periphery of the top surface, it is considered that the force received by the top surface is likely to be concentrated on the extension portion. That is, when the extension portion is longer than 6 mm, the force is concentrated on the extension portion too much, which causes whitening and cracks. Furthermore, the visibility inside the container is also reduced. Further, the width of the step portion 120, that is, the lateral length of the step bottom surface 122 is preferably 0.4 mm to 4.0 mm. When it is 4.0 mm or more, the step portion 120 itself is easily bent, so that deformation easily occurs. If the thickness is 0.4 mm or less, when the leg portions 211 are stacked on the step portion 120, the other upper packaging containers 300 easily shift in the left-right direction, and stable stacking can not be performed.

  Then, with reference to FIG. 7, the effect by arrangement | positioning of the upper side reinforcement part 160 and the lower side reinforcement part 170 is demonstrated in detail.

  First, as can be seen from FIGS. 5 and 6, when an external force F is applied from the upper direction and the lateral direction, the upper reinforcing portion 160 and the lower reinforcing portion 170 are individually deformed across the step bottom surface 122. Therefore, when an external force F is applied, a lower force G1 (see FIG. 7) along the extension direction of the upper reinforcement portion 160 and an upper force G2 along the extension direction of the lower reinforcement portion 170 (see FIG. 7) Each occurs. If the upper reinforcement portion 160 and the lower reinforcement portion 170 are arranged in a straight line, the lower and upper forces join on a straight line, so that the same straight line becomes a “fold” and the starting point of the bending is It becomes easy to occur.

  Therefore, in the present invention, the extension direction of the upper reinforcement portion 160 and the extension direction of the lower reinforcement portion 170 are alternately arranged with the step bottom surface 122 interposed therebetween, as shown in FIG. Since the lower force G1 along the extension direction and the upper force G2 along the extension direction of the lower reinforcing portion 170 do not join in a straight line, no “fold” occurs and a bending start is less likely to occur. .

  Furthermore, the above-mentioned upper force G2 is generated from the entire tip of the upper end portion 172. Therefore, when the width H1 of the upper end portion 172 is large, the width of the force G2 generated therefrom is also large, and it easily merges with the lower force G1 generated from the entire tip of the upper reinforcing portion 160. It is easy to occur, and it is easy for the origin of bending to occur. On the other hand, if the lower end portion 171 of the lower reinforcing portion 170 becomes too thin, the absorbed external force F can not be reduced to the restoring force of the upper end portion 172.

  Therefore, in the present invention, the width of the lower reinforcement portion 170 is gradually narrowed from the lower end portion 171 to the upper end portion 172 so that the width H1 of the upper end portion 172 of the lower reinforcement portion 170 is narrowed. By narrowing the width H1 of the upper end portion 172 of the lower reinforcement portion 170, the upper force G2 generated from the entire tip of the upper end portion 172 merges with the lower force G1 generated from the entire tip of the upper reinforcement portion 160. Therefore, the above-mentioned "fold" does not occur, the origin of bending does not easily occur, and the absorbed external force F can be reduced to the restoring force of the upper end portion 172.

  In addition, the packaging container of this invention is not limited to said Example, In the range described in the claim, the range of embodiment, a various modification and a combination are possible, These modifications are possible And combinations are included in the scope of the right.

Claims (4)

A sheet-formed lid portion including a top surface, a step portion continuous from the top surface, and a side surface continuous from the step portion;
A packaging container comprising: a sheet-formed main body capable of being fitted with the lid;
The stepped portion includes a stepped side surface directed downward from the top surface, and a stepped bottom surface extending laterally from the stepped side surface.
An upper reinforcement is formed on part of the side surface of the step,
The side surface is provided with a lower reinforcement portion at least a part of which can be elastically deformed,
The upper reinforcing portion and the lower reinforcing portion are disposed apart from each other with the bottom of the step portion interposed therebetween ,
The packaging container characterized in that the lower reinforcing portion is configured such that the upper side is more easily elastically deformed than the lower side . The packaging container according to claim 1 , wherein the upper reinforcing portion and the lower reinforcing portion are alternately arranged with the bottom surface of the step portion interposed therebetween. The packaging container according to claim 1 or 2 , wherein the upper reinforcing portion is formed so as to extend from the side surface of the step portion to the top surface. The packaging container according to any one of claims 1 to 3 , wherein a cross-sectional shape of the bottom surface of the step portion is a curved shape.

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