JP6925134B2 - Packaging container - Google Patents

Description

The present invention relates to a packaging container composed of a container body and a lid, and more particularly to a packaging container that can be stacked in a plurality of stages.

Conventionally, a packaging container composed of a container body for storing prepared foods, rice, etc. and a lid body that can be fitted to the container body has been used in supermarkets, convenience stores, and the like. Since the packaging containers are stacked vertically for transportation and display, it is necessary to prevent the vertically stacked packaging containers from slipping sideways.

For example, in Patent Document 1 (see paragraphs [0002] to [0003] and FIGS. 5 to 7 of the specification), the packaging container disclosed as a conventional product is a packaging container including a container body and a lid. be. This lid body includes a convex-shaped upper surface portion of the lid body, and the container body includes a concave-shaped body bottom portion. When the packaging containers are stacked, the concave-shaped bottom surface of the container body is fitted to the convex-shaped upper surface of the lid.

However, when the contents are stored in the bottom surface of the container body, the bottom surface bulges slightly downward due to the load of the contents, and the bottom surface of the container body in the upper stage and the upper surface portion of the lid of the lower lid are used. The fitting becomes loose. Therefore, there is a problem that the stacked state becomes unstable and the load collapses. Further, the closer the bottom surface of the upper container body and the upper surface of the lower lid body are to each other, the deeper the lid body and the container body are fitted, so that the lower lid body is the upper stage. The concave-shaped bottom surface of the container body was deeply covered, and the visibility of the lid was deteriorated.

On the other hand, the packaging container of Patent Document 2 is also a packaging container composed of a container body and a lid. This lid body includes a top plate portion and a side wall portion extending downward from the top plate portion. A leg portion and a rib portion between the leg portions are provided on the bottom surface of the container body, and the inner side surface of the leg portion is in close contact with the side wall portion of the lid body when the container body is stacked on the lid body. It has a shape to fit. Therefore, at the time of stacking, the inner side surface of the leg portion of the container body and the side wall portion of the lid body are closely fitted to prevent lateral displacement, and stable stacking is realized.

However, in the stacked packaging containers of Patent Document 2, since the flat bottom surface of the upper container body is in close contact with the top surface of the lower lid body, the container is stored on the bottom surface of the container body. In this case, the load on the container causes the bottom surface to bulge slightly downward, and the fitting between the upper packaging container and the lower lid becomes loose. Therefore, there is a problem that the stacked state becomes unstable and the load collapses. Further, since the flat bottom surface of the upper container body is stacked deep enough to be in close contact with the top surface of the lower lid body, the lower lid body is deeply formed in the legs of the upper container body and the ribs between the legs. It was covered and the visibility of the lid was deteriorated.

Japanese Patent Application Laid-Open No. 10-45134 JP-A-2004-155466

Therefore, in view of the above problems, the present invention provides a packaging container that can realize stable stacking and does not impair the visibility of the lid.

In order to solve the above problems, the packaging container according to claim 1 of the present invention includes a top plate, a lid provided with a side wall continuous with the top plate, a bottom wall, and a side wall rising from the bottom wall. A packaging container including a container body into which the lid body can be fitted, wherein the container body includes a plurality of first legs and a plurality of second legs that bulge downward from the bottom wall. The second leg portion is lower in height than the first leg portion, and is provided so as to face the first leg portion at each side portion of the bottom wall, and the second leg portion is provided on the bottom wall. It is located inside the one leg, and when the container body is stacked on the lid, the first leg of the container body comes into contact with the side wall of the lid, and the second leg Is characterized in that it comes into contact with the top plate of the lid body.

According to the above characteristics, when the packaging containers are stacked, the first leg of the container body stacked on the upper side abuts on the side wall of the lower lid body, so that the packaging containers do not inadvertently shift. Stable stacking can be achieved. Further, since the second leg of the container body is in contact with the top plate of the lid, the visibility of the lid is impaired without the first leg of the container deeply covering the side wall of the lid. No.

Further, the packaging container according to the present invention is characterized in that the second leg portion is provided with a groove recessed from the surface of the bottom wall.

According to the above characteristics, since the water droplets and the like exuded from the contained matter piled up on the bottom wall collect in the groove, the water droplets and the like exuded from the contained matter do not collect on the bottom wall and touch the contained matter. The freshness of the contents is maintained.

The packaging container of the present invention can realize stable stacking and does not impair the visibility of the lid.

(A) is a plan view of the lid of the packaging container of the present invention, (b) is an end view of AA, and (c) is a side view of the lid. (A) is a plan view of the container body of the packaging container of the present invention, and (b) is a side view. (A) is a BB end view in FIG. 2 (a), FIG. 3 (b) is a CC end view in FIG. 2 (a), and FIG. 3 (c) is D in FIG. 2 (a). -D end view. (A) is a side view of the packaging containers of the present invention in a stacked state, and FIG. 4 (b) is a state in which the lid shown in FIG. 1 (b) is covered with the container body shown in FIG. 3 (a). It is an end view of a packaging container. (A) is an end view and a view of a state in which the container body shown in the BB end view in FIG. 2 (a) is stacked on the lid shown in the AA end view in FIG. 1 (a). 5 (b) is an end view of a state in which the container body shown in the CC end view of FIG. 2 (a) is stacked on the lid shown in the EE end view of FIG. 1 (a). 5 (c) is an end view of a state in which the container body shown in the DD end view of FIG. 2 (a) is stacked on the lid shown in the FF end view of FIG. 1 (a). Is. (A) and (b) show a state in which the packaging containers of the present invention are irregularly stacked, and two lids shown in the end view of EE in FIG. It is an end view which irregularly stacked the container body shown in the DD end view of FIG. 2A so as to straddle the body.

100 Lid 110 Top plate 120 Side wall 200 Container body 210 Bottom wall 220 First leg 230 Second leg 300 Packaging container

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, in this specification, "upper" means an upward direction in a vertical direction when it is placed on a horizontal plane with the opening surface of the container body of the packaging container facing up, and "downward". Is the direction toward the bottom in the vertical direction, "horizontal" is the direction toward the horizontal direction, and "vertical" is the direction perpendicular to "horizontal" in the horizontal plane. ..

First, FIG. 1 shows a lid 100 of the packaging container 300 of the present invention. As shown in the figure, the lid 100 has a deep dish shape that opens downward, and has a top plate 110 that is substantially rectangular in a plan view and a side wall 120 that is continuous downward from the side portion 111 of the top plate 110. Be prepared. A flange portion 130 extending in the lateral direction is provided at the lower end portion of the side wall 120, and a fitting recess 140 is provided outside the flange portion 130. The side wall 120, the flange portion 130, and the fitting recess 140 are continuously provided over the entire circumference in the circumferential direction of the lid body 100. The surface of the flange portion 130 has a smooth curved surface shape, and has an excellent aesthetic appearance.

Further, the side wall 120 includes an upper end surface 121 and a lower end surface 122. The upper end surface 121 is continuously formed so as to hang down from the top plate 110. Further, the upper end surface 121 is configured so that the inner side surface 221 of the first leg portion 220 of the container body can come into contact with the upper end surface 121 as described later. Further, the lower end surface 122 continuous from the upper end surface 121 is formed so as to be inclined toward the flange portion 130.

Next, FIGS. 2 and 3 show the container body 200 of the packaging container 300 of the present invention. As shown in the figure, the container body 200 has a shallow dish shape that opens upward, and has a bottom wall 210 having a substantially rectangular shape in a plan view and a first leg portion that bulges downward from the side portion 211 of the bottom wall 210. It includes 220 and a second leg 230 that is located inside the first leg 220 and bulges downward. Further, the container body 200 has a side wall 240 formed so as to rise from the first leg portion 220, a flange portion 250 extending laterally from the upper end of the side wall 240, and a fitting convex portion 260 outward from the flange portion 250. To be equipped. The side wall 240, the flange portion 250, and the fitting convex portion 260 are continuously provided over the entire circumference of the container body 200 in the circumferential direction. The surface of the flange portion 250 has a smooth curved surface shape, and has an excellent aesthetic appearance.

Further, the first leg portion 220 is provided on each side portion 211 of the bottom wall 210 of the container main body 200 so that the container main body 200 can be stably placed on a horizontal plane. Further, the inner side surface 221 of each first leg portion 220 is a flat surface inclined toward the bottom portion 222. As will be described later, the inner side surface 221 is configured so that when the container body 200 is stacked on the lid body 100, it can come into contact with the side wall 120 of the lid body 100. Further, the first leg portion 220 protrudes downward from the bottom wall 210, and the inside thereof is a groove 223 recessed downward from the bottom wall 210.

Further, as shown in FIG. 2, a third leg portion 280 that bulges downward from the bottom wall 210 is formed between the adjacent first leg portions 220. As shown in FIG. 3B, the third leg portion 280 also bulges downward from the bottom wall 210, and the inside thereof is a groove 281 recessed downward from the bottom wall 210. Further, the bottom portion 282 of the third leg portion 280 has a flat surface extending in the horizontal direction, and can be stably placed on the top plate 110 of the lid 100 extending in the horizontal direction during stacking.

Further, the second leg portion 230 is provided at each side portion 211 of the bottom wall 210 of the container body 200 so as to face each first leg portion 220. Further, as shown in FIG. 2, the three second leg portions 230 are connected to form a substantially U-shape. Further, as shown in FIG. 3, the second leg portion 230 bulges downward from the bottom wall 210, and the inside thereof is a groove 231 recessed downward from the bottom wall 210. Further, the bottom portion 232 of the second leg portion 230 has a flat surface extending in the horizontal direction, and can be stably placed on the top plate 110 of the lid 100 extending in the horizontal direction during stacking.

Further, as shown in FIG. 2, the bottom wall 210 is provided with a plurality of auxiliary grooves 270 having a shape recessed from the surface of the bottom wall 210, and some of the auxiliary grooves 270 are continuous with the second leg portion 230. ing.

Further, as shown in FIG. 3, the second leg 230 is located inside the first leg 220 on the back surface of the bottom wall 210, and the height H2 of the second leg 230 is the first leg. The height of the portion 220 is lower than the height H1. Further, the height H3 of the third leg portion 280 is equal to the height H2 of the second leg portion 230. The height H1 of the first leg 220 is the length from the back surface of the bottom wall 210 to the tip of the first leg 220, and the height H2 of the second leg 230 is from the back surface of the bottom wall 210. The length to the tip of the second leg 230 and the height H3 of the third leg 280 are the length from the back surface of the bottom wall 210 to the tip of the third leg 280.

Here, when the container body 200 is placed on a horizontal plane, the angle α between the horizontal plane and the straight line connecting the tip of the first leg portion 220 and the tip of the second leg portion 230 is preferably about 5 degrees. .. This is because when the angle α is around 5 degrees, the packaging container 300 does not tilt significantly during the irregular stacking described later, and the irregular stacking does not easily collapse. The distance between the first leg portion 220 and the second leg portion 230, and the heights H1 and H2, respectively, are configured so that the angle α can be realized. The distance between the first leg portion 220 and the second leg portion 230, and the heights H1 and H2, respectively, may be changed to any size.

The lid 100 and the container body 200 according to the present embodiment are sheet-like materials having a thickness of about 0.2 to 1.0 mm that can be sheet-molded (for example, vacuum-molded, pressure-pneumatic-molded, and hot-dip-molded). For example, as the material of the lid 100, A-PET, transparent biaxially stretched polystyrene (OPS), or polypropylene so as to ensure visibility of the contents and have appropriate elasticity. (PP) can be used as the material of the container body container body 200, such as A-PET, polypropylene containing filler (PPF), or polystyrene (PS). The lid body 100 and the container body 200 are rectangular in a plan view, but other than this, a polygon in a plan view, a circle in a plan view, and the like can be appropriately changed. Further, although the first leg portion 220 is provided with the groove 223, the present invention is not limited to this, and the first leg portion 220 can be changed so as not to be provided with the groove 223. Similarly, the second leg portion 230 is provided with the groove 231 but is not limited to this, and can be changed so as not to include the groove 231.

Next, the packaging container 300 in which the lid 100 shown in FIG. 1 is covered with the container body 200 shown in FIG. 2 and the upper and lower packaging containers 300 are accurately stacked without being displaced. Will be described with reference to FIGS. 4 and 5.

First, as shown in FIG. 4, in the packaging container 300, the fitting recess 140 of the lid 100 is externally fitted to the fitting convex portion 260 of the container body 200 and sealed over the entire circumference of the container. Sealed packaging containers 300 are stacked one above the other. Further, the flange portion 130 of the lid body 100 is in close contact with the flange portion 250 of the container body 200, making it difficult for dust and the like to enter the packaging container 300 from the outside. Further, the lower end portion 123 of the side wall 120 of the lid 100 is arranged so as to face the side wall 240 inside the flange portion 250. Therefore, the water droplets adhering to the side wall 120 of the lid 100 flow down from the lower end 123 of the side wall 120 to the side wall 240 and accumulate in the groove 223 of the first leg 220 continuous with the side wall 240. Therefore, the water droplets adhering to the side wall 120 do not come into contact with the contained material (sashimi or the like) piled up on the bottom wall 210, and the freshness of the contained material is maintained.

Further, a second leg portion 230 provided with a groove 231 is formed on the bottom wall 210, and water droplets or the like exuded from the contained matter piled up on the bottom wall 210 accumulate in the groove 231. Therefore, water droplets or the like exuded from the contained material do not collect on the bottom wall 210 and come into contact with the contained material, so that the freshness of the contained material is maintained. Further, as shown in FIGS. 2A and 4B, the groove 231 of the second leg 230 is inside the first leg 220 and faces the groove 223 of the first leg 220. It is arranged like this. Therefore, the water droplets and the like that have exuded from the contents on the bottom wall 210 first accumulate in the groove 231 and can prevent the water droplets from flowing into the groove 223 of the first leg portion 220.

Further, the height H1 of the first leg portion 220 is higher than the height H2 of the second leg portion 230, and the first leg portion 220 is the portion most protruding from the bottom wall 210. Therefore, depending on the place where the packaging container 300 is placed, the usage conditions, and the like, the periphery of the first leg portion 220 may be bent by receiving an external force. Then, water droplets in the groove 223 of the first leg portion 220 may flow out from the groove 223 toward the bottom wall 210, but since the water droplets that have flowed out into the groove 231 of the second leg portion 230 collect, the bottom wall 210 It prevents the outflow to.

Further, an auxiliary groove 270 is formed in the bottom wall 210, and water droplets can be collected in the auxiliary groove 270 as well. Further, as shown in FIG. 2A, since a part of the auxiliary groove 270 is continuous with the second leg portion 230, the water droplets flowing into the auxiliary groove 270 may be guided to the second leg portion 230. can. The depth of the auxiliary groove 270 is shallower than that of the groove 231 of the second leg portion 230, and the auxiliary groove 270 plays a role of auxiliary collecting water droplets and increasing the strength of the bottom wall 210.

Next, the state in which the packaging containers 300 are stacked will be specifically described. As shown in FIGS. 5A and 5C, the inside of the first leg 220 of the container body 200 stacked on the upper side. The side surface 221 is in contact with the upper end surface 121 of the side wall 120 of the lower lid 100. Therefore, the packaging containers 300 stacked vertically and horizontally are stably stacked without being displaced vertically and horizontally.

Further, the second leg 230 of the container body 200 is in contact with the top plate 110 of the lid 100, and the container body 200 is in a raised state with respect to the top plate 110 of the lid 100. Therefore, the first leg 220 of the container body 200 does not deeply cover the side wall 120 of the lid 100, but comes into contact with the upper end surface 121 of the side wall 120. Therefore, since the inside of the lid 100 can be clearly seen from the lower end surface 122 side of the side wall 120, the visibility of the lid 100 is not impaired. The depth at which the first leg 220 of the container body 200 abuts and covers the side wall 120 of the lid 100 is the difference between the height H1 of the first leg 220 and the height H2 of the second leg 230. Is equal to.

As described above, according to the packaging container 300 of the present invention, the first leg 220 of the container body 200 stacked on the upper side abuts on the side wall 120 of the lower lid 100, so that the container body 100 may be inadvertently displaced. It is possible to realize stable stacking. Further, since the second leg 230 of the container body 200 is in contact with the top plate 110 of the lid 100, the first leg 220 of the container body 200 does not deeply cover the side wall 120 of the lid 100. The visibility of 100 is not impaired.

By the way, when the contents are placed on the bottom wall 210, the bottom wall 210 may bend downward due to the load of the contents. Then, when the bottom wall 210 on the center side bends downward, the first leg 220 on the end side continuous with the bottom wall 210 on the center side is deformed so as to open outward, and the first leg There is a risk that the inner side surface 221 of the portion 220 will not easily come into contact with the side wall 120 of the lid 100. Then, stable stacking cannot be realized. However, in the packaging container 300 of the present invention, the second leg portion 230 is provided at a position inside the first leg portion 220 and facing the first leg portion 220. Therefore, even if the bottom wall 210 on the central side tries to bend downward, the second leg portion 230 abuts and supports the top plate 110 of the lid 100, so that the bottom wall 210 on the end side is prevented from bending. can. Further, since the second leg portion 230 is provided at a position facing the first leg portion 220, the rigidity around the first leg portion 220 is also increased. As a result, the deformation of the first leg portion 220 can be effectively prevented, and stable stacking is surely realized.

Further, as shown in FIG. 5B, the third leg portion 280 is in contact with the top plate 110 of the lid body 100. Then, as shown in FIG. 2, the third leg portion 280 is provided between the adjacent first leg portions 220. Therefore, the first leg 220 of the container body 200 does not deeply cover the side wall 120 of the lid 100, and the visibility of the lid 100 is not impaired. Further, even if the bottom wall 210 tries to bend downward, the third leg portion 280 abuts and supports the top plate 110 of the lid 100, so that the bottom wall 210 can be prevented from bending. Further, since the third leg portion 280 is provided between the adjacent first leg portions 220, the rigidity around the first leg portion 220 is also increased. As a result, the deformation of the first leg portion 220 can be effectively prevented, and stable stacking is surely realized.

Next, with reference to FIG. 6, a state in which a plurality of packaging containers 300 are intentionally shifted laterally and stacked (hereinafter, referred to as irregular stacking) will be described.

As shown in FIG. 6A, normally, the upper packaging container 300 is irregularly stacked so as to straddle the lids 100 of the two lower packaging containers 300 so as to be laterally displaced. Specifically, each of the first leg portions 220 of the upper packaging container 300 abuts on each top plate 110 of the lower adjacent packaging container 300, and the upper packaging container 300 is horizontally placed. It is placed. However, as shown in FIG. 6B, the upper packaging container 300 is largely displaced by the lateral external force F, and the upper packaging container 300 is laterally displaced due to human error. It may be placed in a state of large deviation. Then, as shown in FIG. 6B, one of the first leg portions 220 (on the right side in the drawing) falls from the top plate 110 of the lid 100, and the upper packaging container 300 is tilted diagonally.

Here, when the packaging container 300 does not include the second leg portion 230, the upper packaging container 30
The upper packaging container 300 is greatly tilted until the bottom wall 210 of 0 comes into contact with the side portion 111 of the lower lid 100. Then, there is a risk that the balance will be lost due to that, and the irregularly stacked state will be lost. However, according to the packaging container 300 of the present invention, as shown in FIG. 6B, since the second leg portion 230 is provided inside the first leg portion 220, the top plate 110 of the lid 100 is provided. Each side portion 111 does not fit between the first leg portion 220 and the second leg portion 230 of the upper packaging container 300 or below the bottom wall 210, and the second leg portion 230 is a lid. The packaging container 300 is prevented from being greatly tilted in contact with the top plate 110 of 100. Therefore, according to the packaging container 300 of the present invention, it is possible to prevent the packaging container 300 from being greatly tilted and to prevent the irregular stacking from collapsing.

Further, as shown in FIG. 3, the state shown in FIG. 6B shows that the angle α between the horizontal plane and the straight line connecting the tip of the first leg portion 220 and the tip of the second leg portion 230 is about 5 degrees. In the optimum state, the inclination of the packaging container 300 can be sufficiently suppressed, and the stable stacking effect shown in FIG. 5 can be sufficiently realized.

Specifically, when the distance between the first leg 220 and the second leg 230 is constant, if the angle α is made too small, the height H1 of the first leg 220 and the height of the second leg 230 are high. The difference from H2 becomes smaller. Then, in the state shown in FIG. 6B, the inclination of the packaging container 300 can be suppressed to be smaller, but in the state shown in FIG. 5, the inner side surface 221 of the first leg portion 220 and the lid 100 The range of contact with the side wall 120 becomes smaller, and the stable stacking effect becomes relatively smaller. On the other hand, if the angle α is made too large, the difference between the height H1 of the first leg portion 220 and the height H2 of the second leg portion 230 becomes large. Then, in the state shown in FIG. 6B, the inclination of the packaging container 300 becomes large, but in the state shown in FIG. 5, the inner side surface 221 of the first leg portion 220 and the side wall 120 of the lid 100 are connected to each other. The contact area becomes large, and the effect of stable stacking becomes relatively large.

That is, there is a trade-off relationship between the magnitude of the inclination of the packaging container 300 and the stable stacking effect depending on the magnitude of the angle α. Therefore, as a result of repeated experiments by the inventor, about 5 degrees was derived as the optimum angle α that can sufficiently suppress the inclination of the packaging container 300 to be sufficiently small and further realize the effect of stable stacking. It is.

In the present embodiment, the lid 100 of the packaging container 300 and the container body 200 are externally fitted, but the present invention is not limited to this, and the outer fitting or the inner fitting and the outer fitting can be used. Depending on the combination, the lid body 100 and the container body 200 may be fitted.

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

Claims (2)

A top plate, a lid provided with a side wall continuous with the top plate, and
A packaging container including a bottom wall and a side wall rising from the bottom wall, and a container body into which the lid can be fitted.
The container body includes a plurality of first legs and a plurality of second legs that bulge downward from the bottom wall.
The second leg portion is lower in height than the first leg portion and is provided so as to face the first leg portion at each side portion of the bottom wall, and the first leg portion is provided on the bottom wall. Located inside the
When the container body is stacked on the lid body, the first leg portion of the container body abuts on the side wall of the lid body, and the second leg portion abuts on the top plate of the lid body. A characteristic packaging container. The packaging container according to claim 1, wherein the heights of the plurality of second legs are equal to each other.

Images