JP2016145053A - Packaging container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging container of which a step part periphery of a lid body is hard to be collapsed even if an external force is given from an upper direction and a lateral direction.SOLUTION: A packaging container 300 comprises: a sheet-molded lid body 100 including a top surface 110, a step part 120 continuous with the top surface 110, and a side surface 130 continuous with the step part 120; and a sheet-molded body part 200 in which the lid body 100 can be fitted. The step part 120 is configured from a step part side face 121 which is directed downwards from the top surface 110, and a step part bottom face 122 which is directed laterally from the step part side face 121. A part of the step part side face 121 is provided with an upper reinforcement part 160, the side surface 130 is provided with a lower reinforcement part 170 of which at least a part is elastically deformable, and the upper reinforcement part 160 and the lower reinforcement part 170 are so located as to be separated from each other with the step part bottom face 122 interposed therebetween.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a packaging container that can be transported and displayed by packing side dishes, rice, and the like and stacking them in multiple stages.

  2. Description of the Related Art Conventionally, a packaging container including a container main body for storing prepared meals, rice, and the like and a lid body that can be fitted to the container main body has been used in supermarkets and convenience stores. And since this packaging container is transported and displayed densely stacked up and down, right and left, it is necessary to reinforce so that a container main body and a lid may not be crushed.

  For example, the packaging container of Patent Document 1 is a packaging container composed of a container main body and a lid, and includes a reinforcing recess at a corner portion of the lid. With this reinforcing recess, it is possible to prevent the corner portion from being crushed due to other objects coming into contact with the corner portion and applying force when the packaging container is transported or displayed.

  Further, the packaging container of Patent Document 2 is a packaging container composed of a container body and a lid body, and gradually expands to the lower end of the lid body side wall portion from the periphery of the top plate portion of the lid body. It has a substantially V-shaped lid groove. The lid concave groove can sufficiently withstand the compressive load in the vertical direction when the packaging containers are stacked.

  Moreover, the packaging container of patent document 3 and patent document 4 is a packaging container which consists of a container main body and a cover body, Comprising: On the side surface of a container main body, a reinforcing protrusion (or potch) is alternately (or , Zigzag). Thereby, the intensity | strength of a container main body improves and it can endure the compressive load of an up-down direction.

  The packaging containers of Patent Document 1 to Patent Document 4 reinforce the lid and the container body, but external force concentrates on the top surface and side surfaces around the stepped portion of the lid, and these are crushed. We did not recognize this problem and did not fundamentally solve this problem.

Patent 2750501 JP2012-240750 Japanese 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 step portion of the lid body is not easily crushed.

  In order to solve the above-described problem, a packaging container according to claim 1 of the present invention is formed into a sheet including a top surface, a stepped portion continuous from the top surface, and a side surface continuous from the stepped portion. A packaging container comprising a lid part and a sheet-molded main body part into which the lid part can be fitted, wherein the step part includes a step part side face directed downward from the top surface, and the step part side face It is composed of a bottom surface of the step portion facing from the side, an upper reinforcing portion is formed on a part of the side surface of the step portion, and a lower reinforcing portion at least partially elastically deformable is formed on the side surface, The upper reinforcing portion and the lower reinforcing portion are arranged to be separated from each other with the bottom surface of the stepped portion interposed therebetween.

  According to the above feature, since the stepped portion is reinforced by providing the upper side reinforcing portion on the stepped portion side surface, the stepped portion can be easily deformed even if an external force is applied from above and from the lateral direction. There is no. Even if the step portion is deformed with a large external force, the step portion can be returned to the original state before the deformation by the restoring force of the lower reinforcing portion that can be elastically deformed at least partially, so that the step portion is not easily crushed.

  Moreover, since the upper side reinforcement part and the lower side reinforcement part are arrange | positioned mutually apart on both sides of a step part bottom face, there is no mutual contact location and the origin of a bending does not arise at the time of a deformation | transformation. As a result, the stepped portion is not easily crushed.

  Furthermore, the packaging container according to claim 2 of the present invention is characterized in that the lower reinforcing portion is configured such that the upper side is more easily elastically deformed than the lower side.

  According to the above feature, the upper side near the step portion is more easily elastically deformed, so that the force applied to the periphery of the step portion is effectively absorbed, and the step portion is returned to the original state smoothly and reliably. Can be made.

  Furthermore, the packaging container according to claim 3 of the present invention is characterized in that the upper reinforcing portion and the lower reinforcing portion are alternately arranged with the step bottom surface interposed therebetween.

  According to the above feature, when an external force is applied, the forces generated from the upper reinforcing portion and the lower reinforcing portion are less likely to merge on the bottom surface of the stepped portion, and the starting point of bending is less likely to occur.

  Furthermore, the packaging container according to claim 4 of the present invention is characterized in that the upper reinforcing portion extends from the side surface of the step portion to the top surface.

  According to the above feature, the periphery of the edge portion of the top surface is reinforced by the extended upper reinforcing portion, so that the edge portion can be prevented from being bent.

  Furthermore, the packaging container which concerns on Claim 5 of this invention is characterized by the cross-sectional shape of the said step part bottom face being a curved shape.

  According to the above feature, when an external force is applied and deformed, a portion where the force concentrates on the bottom surface of the stepped portion is difficult to be formed, and the starting point of bending is unlikely to occur.

  In the packaging container of the present invention, even if an external force is applied from the upper direction and the lateral direction, the periphery of the step portion of the lid body is not easily crushed.

(A) is a top view of the cover part of the packaging container of this invention, (b) is an AA end elevation. (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 part of the packaging container of the state which fitted the cover part shown in FIG.1 (b) and the main-body part shown in FIG.2 (b) is shown, (a) is the state which stacked the said packaging container End view, (b) is an end view in which the periphery of the step portion is enlarged in a state where the packaging containers are stacked. (A) is the top view which expanded the upper reinforcement part and lower reinforcement part periphery of the cover part of the packaging container of this invention shown in FIG. 1 (a), (b) is CC end view. . FIG. 5 is an end view showing a state where an external force is applied from above in the state shown in FIG. It is an end elevation which shows a mode that external force was applied from the horizontal direction in the state shown in FIG.4 (b). FIG. 5 is a plan view conceptually showing a force distribution when an external force is applied from the upward direction or the lateral direction in the state shown in FIG.

DESCRIPTION OF SYMBOLS 100 Cover part 110 Top surface 120 Step part 121 Step part side surface 122 Step part bottom face 130 Side surface 160 Upper side reinforcement part 170 Lower side reinforcement part 200 Main body part 300 Packaging container

  Embodiments of the present invention will be described below with reference to the drawings. In the present specification, “upward” means a direction upward in the vertical direction when placed on a horizontal surface with the opening surface of the main body of the packaging container facing upward, and “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 that opens downward, and has a substantially horizontally long octagonal (substantially oval) top surface 110 in plan view and a step continuous downward from the top surface 110. Part 120 and a side surface 130 continuous downward from stepped part 120. 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 provided outside the fitting convex portion 140. Further, the step portion 120 includes a step portion side surface 121 extending downward from the edge portion 111 of the top surface 110 and a step portion bottom surface 122 extending sideward from the step portion side surface 121. The step portion 120, the side surface 130, the fitting convex portion 140, and the lid flange portion 150 are continuously provided over the entire circumference in the circumferential direction of the lid portion 100.

  In addition, the upper reinforcing portion 160 and the lower reinforcing portion 170 are provided at four corner portions of the lid portion 100 in a total of four locations on the long side. The upper reinforcing portion 160 is formed on a part of the step side surface 121, the lower reinforcing portion 170 is formed on the side surface 130, and the upper reinforcing portion 160 and the lower reinforcing portion 170 are located on both sides of the step bottom surface 122. 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 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, when the lid portion 100 has a shape with long sides and corner portions such as a substantially horizontally long octagon (substantially oval) in plan view, the length of the lid portion 100 is increased by an external force from above. Since the center of the side is easily bent, cracks and whitening are unlikely to occur. Further, since the corner portion is curved, the rigidity is higher than that of the long side, and the corner portion is a portion that is not easily bent. On the other hand, the corners on both sides of the center of the long side are close to the corners that are difficult to bend, so they cannot bend easily, and on the other hand, there is no rigidity like the corners. Whitening is particularly likely. Therefore, by forming the upper reinforcing portion 160 and the lower reinforcing portion 170 at the corner portion 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 200 has a shallow dish shape that opens upward, and has a substantially horizontally long octagonal (substantially oval) bottom wall 210 in plan view and rises from an end of the bottom wall 210. And a side wall 220 formed. A leg portion 211 that protrudes downward from the bottom wall 210 is provided at a corner portion of the bottom wall 210. Further, a fitting recess 230 is provided at the upper end of the side wall 220, and a main body flange portion 240 extending in a substantially horizontal direction 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 over the entire circumference in the circumferential direction of the main body portion 200.

  The lid 100 and the main body 200 according to the present embodiment use a sheet-like material that can be formed into a sheet (for example, vacuum forming, pressure forming, hot plate forming). As a material, A-PET, transparent biaxially stretched polystyrene (OPS), or polypropylene (PP) is used as a material of the main body part 200 so as to ensure the visibility of the contents and have appropriate elasticity. , A-PET, filled polypropylene (PPF), or polystyrene (PS) can be used. Moreover, although the cover part 100 and the main-body part 200 are planar-view ellipses, it can change suitably other than this, for example, planar view substantially circular shape, planar view polygon.

  Next, the packaging container 300 in a state where 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. FIG. 3 shows a state in which the packaging containers 300 are stacked.

  As shown in FIG. 3A, since the fitting convex portion 140 of the lid portion 100 is fitted into the fitting concave portion 230 of the main body portion 200 over the entire circumference of the outer periphery of the packaging container 300, Containment etc. will not leak out. Further, 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 between them, the lid portion 100 is not inadvertently removed, and the packaging container 300 has an inside. Foreign matter such as dust is difficult to enter.

  Next, FIG. 3B shows an enlarged state around the step portion 120 when the packaging containers 300 are stacked, and is stacked on the step portion 120 of the lid portion 100. The leg part 211 of the other packaging container 300 is placed. Specifically, since the leg side surface 212 of the leg portion 211 is in contact with the stepped portion side surface 121 of the stepped portion 120 and the leg portion bottom surface 213 of the leg portion 211 is in contact with the stepped portion bottom surface 122 of the stepped portion 120, Other upper packaging containers 300 are stably stacked 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 to this. You may fit the cover part 100 and the main-body part 200 with a combination. Moreover, in this embodiment, although the leg part 211 of the other packaging container 300 is mounted in the step part 120, 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 simply constitutes a part of the design of the lid portion 100. It may be a thing.

  Next, with reference to FIG. 4, the structure of the upper side reinforcement part 160 and the lower side reinforcement part 170 of this invention is demonstrated in detail.

  First, the upper reinforcing part 160 has a concave shape recessed inward. Further, the upper reinforcing portion 160 includes a lower end portion 161 formed on the stepped side surface 121 and an upper end portion 162 formed so as to extend from the lower end portion 161 to the top surface 110. The upper end 162 is formed as a single continuous groove. Also, as shown in FIG. 4B, the lower end 161 and the upper end 162 act as a single substantially L-shaped rib, so that the edge is a continuous portion of the top surface 110 and the stepped portion 120. The area around 111 is reinforced.

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

  In this way, the lower reinforcing portion 170 is gradually narrowed from the lower end portion 171 toward the upper end portion 172, or the upper end portion 172 is gradually reduced in depth by a simple method. However, it is possible to easily realize a configuration that is more elastically deformed than the lower end portion 171. The upper end 172 is more elastic than the lower end 171 by increasing the thickness of the material constituting the lower end 171 and reducing the thickness of the material constituting the upper end 172, for example. You may implement | achieve the structure which is easy to deform | transform.

  Furthermore, a part of the lower end 171 is bent in a direction different from that of the upper end 172 and has a high rigidity, so that it is more difficult to be elastically deformed. Therefore, the configuration in which the upper end portion 172 is more easily elastically deformed than the lower end portion 171 becomes more prominent.

  4A, three upper reinforcing portions 160 are formed at equal intervals on the step portion side surface 121 of the step portion 120, and three lower reinforcing portions 170 are equally spaced at the side surface 130. Is formed. And the upper side reinforcement part 160 and the lower side reinforcement part 170 are spaced apart up and down across the step part bottom face 122, without mutually contacting. Furthermore, the upper reinforcing portion 160 and the lower reinforcing portion 170 are alternately arranged along the circumferential direction of the lid portion 100 with the stepped portion bottom surface 122 interposed therebetween when the lid portion 100 is viewed in plan. In other words, when the lid 100 is viewed in plan, the upper reinforcing portion 160 and the lower reinforcing portion 170 are not arranged on the same straight line, that is, in a straight line.

  Note that a plurality of the upper reinforcing portions 160 and the lower reinforcing portions 170 may be formed, but if the number is too large, the visibility inside the container is lowered, so that one to eight is preferable for each corner portion. . Moreover, although the upper side reinforcement part 160 and the lower side reinforcement part 170 were made into the concave shape hollowed inward, what is necessary is just a shape which can reinforce the formed site | part, for example, it is good also as the convex shape bulging outside.

  Next, with reference to FIGS. 5 and 6, the function and effect of the upper reinforcing portion 160 and the lower reinforcing portion 170 will be described in detail.

  First, in FIG. 5, for example, when other packaging containers 300 are stacked upward, an external force F is applied from above due to the weight of the contents in the main body 200 of the other packaging containers 300. Is assumed.

  When an external force F is applied to the top surface 110 from above, the top surface 110 is deformed to be curved downward as shown in FIG. Then, the step portion 120 tends to bend downward as being pulled by the top surface 110, but the step portion 120 is reinforced by the upper reinforcing portion 160, and thus is difficult to deform.

  However, as shown in FIG. 5, when the external force F is large, the stepped portion 120 is slightly deformed so as to sink inside the lid portion 100. Then, the upper end 172 side of the lower reinforcing portion 170 is pulled by the step portion 120 and elastically deforms downward, but one lower end portion 171 side hardly undergoes elastic deformation. As a result, the lower reinforcing portion 170 on the straight line before deformation (see FIG. 4B) is elastically deformed into an arch that bulges outward as shown in FIG. 5 by the external force F applied from above. And the restoring force which tries to return to the original state is acting on the lower side reinforcement part 170 elastically deformed in this arch shape.

  Thereafter, when the external force F is removed, the lower reinforcing portion 170 becomes a linear lower reinforcing portion 170 before deformation (FIG. 4B) due to the restoring force to return the lower reinforcing portion 170 to the original state. Return to Browse. Then, the step part 120 sinking downward is pushed up by the upper end part 172 of the lower side reinforcement part 170, and returns to the original state (refer FIG.4 (b)).

  Next, referring to FIG. 6, for example, when a person picks up the packaging container 300, the stepped portion 120 of the lid portion 100 and the side surface 130 around the stepped portion 120 are picked with fingers, Assume that an 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 from the lateral direction, the step portion 120 is reinforced by the upper reinforcing portion 160, so that it is difficult to deform.

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

  Thereafter, when the external force F is removed, the lower reinforcing portion 170 becomes a linear lower reinforcing portion 170 before deformation (FIG. 4B) due to the restoring force to return the lower reinforcing portion 170 to the original state. Return to Browse. Then, the step part 120 sinking downward is pushed up by the upper end part 172 of the lower side reinforcement part 170, and returns to the original state (refer FIG.4 (b)).

  As described above, according to the present invention, since the stepped portion 120 is reinforced by providing the stepped portion side surface 121 of the stepped portion 120, the stepped portion 120 is reinforced, so that even if an external force F is applied from above and from the lateral direction. The step portion 120 is not easily deformed and crushed. Further, even if the external force F is large and the stepped portion 120 is deformed, the stepped portion 120 returns to the original state before the deformation and is not easily crushed by the restoring force of the lower reinforcing portion 170 that can be elastically deformed at least partially.

  Further, as shown in FIGS. 5 and 6, the upper reinforcing portion 160 is formed on the stepped portion side surface 121 and the lower reinforcing portion 170 is formed on the side surface 130 at different locations. The upper reinforcing portion 160 and the lower reinforcing portion 170 are individually deformed in different modes. Therefore, if the upper side reinforcement part 160 and the lower side reinforcement part 170 are contacting, the contact location will be a starting point of bending. Further, if the extension direction of the upper reinforcement portion 160 and the extension direction of the lower reinforcement portion 170 are formed so as to be on the same straight line, the same straight line becomes a “fold”, which becomes a starting point for bending.

  However, in the present invention, the upper reinforcing portion 160 and the lower reinforcing portion 170 are arranged to be separated from each other with the stepped portion bottom surface 122 interposed therebetween, and there is no contact portion, so that a starting point of bending that becomes a “fold” occurs. There is no. Further, since the respective extending directions are not on the same straight line, it is possible to more effectively prevent the starting point of bending that becomes a “fold”.

  Further, the lower reinforcing portion 170 is configured as an integral concave portion 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. As a result, the external force F applied to the periphery of the step portion 120 can be effectively absorbed by the upper end portion 172 being elastically deformed. On the other hand, since the lower end portion 171 is configured as an integral concave portion of the upper end portion 172 that is less elastically deformed than the upper end portion 172, the absorbed external force F is reduced to the restoring force of the upper end portion 172, and the lower side is lowered by the external force F. It is possible to prevent the entire reinforcing portion 170 from being deformed excessively.

  Further, the lower end portion 171 which is not easily elastically deformed has a stronger restoring force than the upper end portion 172 which is easily elastically deformed. Therefore, when the stepped portion 120 submerged inside the container returns to its original state, the stepped portion 120 is returned to the upper end 172 by being pushed up flexibly by the restoring force of the upper end 172, and the stronger lower end 171. It is supported by the restoring force of and can be restored reliably. In other words, the upper end portion 172 close to 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 is returned to the original state smoothly and reliably. It can be made.

  Further, the upper end portion 162 of the upper reinforcing portion 160 is formed to extend from the step portion 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 portion 111 of the top surface 110 is reinforced by the upper end portion 162 of the upper reinforcing portion 160, and the edge portion 111 is not bent. It is.

  Further, the cross-sectional shape of the step bottom surface 122 of the step 120 is a curved shape. That is, as shown in FIGS. 5 and 6, when the step bottom surface 122 is curved to draw a substantially S-shaped curve, the force concentrates on the step bottom surface 122 when the external force F is applied and deforms. It is difficult to make a part to be bent, and the starting point of bending is less likely 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 extends from the stepped portion side surface 121 of the stepped portion 120 to the top surface 110. The length extending from the stepped portion side surface 121 is within 6 mm. 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 concentrate on the extension portion. In other words, when the extension portion is longer than 6 mm, the force is excessively concentrated on the extension portion, which causes whitening and cracks. Furthermore, the visibility inside the container is also lowered. Further, the width of the stepped portion 120, that is, the length to the side of the stepped portion bottom surface 122 is preferably 0.4 mm to 4.0 mm. If the thickness is 4.0 mm or more, the stepped portion 120 itself is easily bent, so that deformation is likely to occur. When the thickness is 0.4 mm or less, when the leg portions 211 are stacked on the step portion 120, the other packaging containers 300 above are easily displaced in the left-right direction, and stable stacking cannot be performed.

  Next, with reference to FIG. 7, the function and effect of the arrangement of the upper reinforcing portion 160 and the lower reinforcing portion 170 will be described in detail.

  First, as can be seen from FIGS. 5 and 6, when an external force F is applied from above and from the side, 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 downward force G1 (see FIG. 7) along the extending direction of the upper reinforcing portion 160 and an upward force G2 along the extending direction of the lower reinforcing portion 170 (see FIG. 7). Each occurs. If the upper reinforcing portion 160 and the lower reinforcing portion 170 are arranged in a straight line, the lower and upper forces merge on a straight line, so that the same straight line becomes a “fold”, and the starting point of bending is It tends to occur.

  Therefore, in the present invention, the extending direction of the upper reinforcing portion 160 and the extending direction of the lower reinforcing portion 170 are alternately arranged with the step bottom surface 122 sandwiched therebetween, so that the upper reinforcing portion 160 has an extension direction as shown in FIG. Since the downward force G1 along the extending direction and the upward force G2 along the extending direction of the lower reinforcing portion 170 do not merge in a straight line, the “fold” does not occur and the starting point of bending is unlikely to occur. .

  Further, the above-described upward force G <b> 2 is generated from the entire tip of the upper end 172. Therefore, when the width H1 of the upper end portion 172 is large, the width of the force G2 generated from the upper end portion 172 also increases, and it becomes easy to merge with the lower force G1 generated from the entire tip of the upper reinforcing portion 160, and the above-mentioned “fold” is generated. It tends to occur and the starting point of bending is likely 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 cannot be reduced to the restoring force of the upper end portion 172.

  Therefore, in the present invention, the width of the lower reinforcing 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 reinforcing portion 170 is reduced. By reducing the width H1 of the upper end portion 172 of the lower reinforcing 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 reinforcing portion 160. As a result, the above-mentioned “fold” does not occur, the starting point of bending does not easily occur, and the absorbed external force F can be reduced to the restoring force of the upper end 172.

  The packaging container of the present invention is not limited to the above-described examples, and various modifications and combinations are possible within the scope of the claims and the scope of the embodiments. Combinations are also included in the scope of rights.

Claims (5)

A lid formed from a sheet, comprising: a top surface; a step portion continuous from the top surface; and a side surface continuous from the step portion;
A packaging container provided with a sheet-molded main body that can be fitted with the lid,
The stepped portion is composed of a stepped portion side facing downward from the top surface and a stepped portion bottom surface facing the side from the stepped portion side surface,
An upper reinforcing part is formed on a part of the side surface of the step part,
On the side surface, a lower reinforcing portion at least partially elastically deformable is formed,
The packaging container, wherein the upper reinforcing portion and the lower reinforcing portion are spaced apart from each other with the bottom of the stepped portion interposed therebetween.
The packaging container according to claim 1, wherein 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 or 2, wherein the upper reinforcing portion and the lower reinforcing portion are arranged alternately with the bottom surface of the stepped portion interposed therebetween.
The packaging container according to any one of claims 1 to 3, wherein the upper reinforcing portion is formed to extend from the step side surface to the top surface.
  The packaging container according to any one of claims 1 to 4, wherein a cross-sectional shape of the bottom surface of the step portion is a curved shape.

Images