JP2019043565A - Packaging container - Google Patents

Abstract

To provide packaging containers which can be stacked stable while reinforcing leg parts.SOLUTION: A packaging container 1 is made of a synthetic resin sheet, and comprises a container main body 2 and a lid 3. The container main body 2 has a leg part 22 expanding downward from a bottom part 21 of the container main body 2. The leg part 22 is a stepped structure having at least a first face part 23 and a second face part 24. The first face part 23 is located inside the container and is placeable on a top face 31 of the lid 3, and the second face part 24 is located outside the container and extending lower than the first face part 23. The second face part has a shape to fit with a side wall face part 32 of lid 3 when the container main body 2 is placed on an upper side of lid 3.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a packaging container which can mainly contain food and the like and is made of a synthetic resin sheet.

It is often seen that food products such as lunch boxes, salads, sugar beets and fruits are enclosed in a packaging container molded from a thin-walled synthetic resin sheet and displayed at a storefront such as a retail store.
Such packaging containers are provided with legs to allow the bottom surface to be at a high position in order to make the enclosed food products and the like easy to see. However, when the container is formed, the sheet of the leg portion may be stretched to make the thickness of the leg thinner than that of the other portions and the strength may be weakened.
Therefore, for example, as shown in Patent Document 1 below, the sheet thickness may be increased, and a thread ridge-like convex portion may be provided on the outer periphery of the foot portion.

  In addition, such packaging containers are often stacked in multiple tiers and displayed at stores. However, when the packaging container is provided with a leg, when the food or the like is stored, the weight of the food or the like bends so that the center of the bottom is recessed and is placed on the upper side of the other packaging containers. At that time, the bottom surface portion may come into contact with the top surface portion of the lid of another packaging container in a point-like manner, resulting in instability.

  Therefore, for example, as shown in Patent Document 2 below, a polygonal container main body molded from a thermoplastic synthetic resin sheet and a transparent lid detachably attached to the peripheral edge of the container main body are provided, respectively. At least at each corner of the container body, a bent horizontal cross-sectioned leg is provided vertically, and the lid is a substantially flat polygonal top plate and a side wall connected to the peripheral end of the top plate. The corner portion where the top plate portion and the side wall portion intersect, and the corner portion where the side wall portions are adjacent to each other are connected in a circular arc, respectively, and the inside of the respective leg portions of the container main body The side surface is characterized in that when the container main body is stacked on the lid, the side wall portion is formed in a fitted shape, so that the food inside can be easily seen, and it is shifted when stacked and displayed. Food packaging to make it difficult and difficult to deform Vessel has been developed.

JP 2008-290728 A JP 2004-155466 A

Recently, it is desirable to reduce the thickness of the sheet from the viewpoint of saving resources, and increasing the thickness of the sheet to improve the strength of the leg is contrary to the trend and does not increase the thickness of the sheet. Development is in progress in the industry to improve strength.
In addition, the ability to stably stack the packaging containers is not only at the time of display but also at the time of transportation with less risk of breakage, and is convenient.

  Therefore, an object of the present invention is to provide a packaging container which can be stably stacked while reinforcing the legs.

  A packaging container according to an embodiment of the present invention is a packaging container made of a synthetic resin sheet and including a container main body and a lid, the container main body bulging downward from the bottom surface of the container main body A leg portion is provided, and the leg portion has a step-like structure including at least a first surface portion and a second surface portion, the first surface portion is located inside the container, and is placed on the top surface portion of the lid. The second surface portion is located outside the container and extends below the first surface portion, and when the container body is placed on the upper side of the lid, the second surface portion is placed on the side wall surface portion of the lid. It is characterized in that it has a shape along the line.

  With such a configuration, the leg portion is reinforced because of the stepped structure, and the rigidity is high even if it is manufactured by thermoforming. In addition, since the first surface portion is placed on the top surface portion of the lid and the second surface portion is shaped along the side wall surface portion of the lid, it can be stably placed on the lid and is less likely to collapse even if stacked. Become.

The packaging container of the above-mentioned form can be provided with a projection which extends in the longitudinal direction and bulges inside the container on the inner side surface between the bottom surface of the container body and the first surface of the leg. It is preferable that the protrusion has a maximum protrusion width of the protrusion (the protrusion width of the protrusion / the minimum width of the first surface portion) relative to the minimum width of the first surface portion in a range of 0.1 to 2.0. It is preferred that it is triangular or curved.
With such a configuration, the strength of the legs is enhanced, and the containers can be stably supported even when stacked.

  In the packaging container of the above embodiment, the lid can be made transparent or translucent, and the leg portions can be provided in the circumferential direction at appropriate intervals.

  With such a configuration, when the packaging containers are stacked, it is possible to visually recognize the inside of the packaging container disposed below from the gap between the leg portions, and it becomes easy to confirm the contents even in the stacked state.

It is a perspective view showing one embodiment of a packing container of the present invention. It is an enlarged perspective view of the leg part vicinity of the container main body of the packaging container shown in FIG. It is the expanded sectional view which disconnected the leg part of the container main body of the packaging container shown in FIG. 1 in the horizontal direction. It is the side view which showed the state which stacked | piled up the container for packaging shown in FIG. FIG. 2 is a cross-sectional view in which the leg portion is horizontally cut in a state in which the packaging containers shown in FIG. 1 are stacked.

  Hereinafter, an embodiment of the packaging container of the present invention will be described based on the drawings.

  The packaging container 1 according to an embodiment of the present invention includes a container body 2 and a lid 3 as shown in FIG. 1, and the lid 3 is fitted to the container body 2 from above and can be covered. It is

Although the packaging container 1 is not particularly limited, it is suitable for packaging food products such as sushi, sugar beet, salad, and fruit.
In the present embodiment, the packaging container 1 has a horizontally long rectangular shape in plan view, but is not limited thereto. For example, a square or rectangular shape in plan view, a circular or oval shape in plan view, a hexagonal shape in plan view Alternatively, it may be a polygonal shape in plan view such as an octagonal shape.
When the packaging container 1 has a rectangular shape in plan view, for example, the ratio of width, length, height to width 1 to length 1.3 to 3.5, height 0.3 to 1.5 It is preferable to do.

  The container body 2 or the lid 3 can be manufactured by, for example, thermoforming a synthetic resin sheet having a sheet thickness of 0.1 mm to 3 mm, preferably 0.2 mm to 2 mm.

The synthetic resin sheet is not particularly limited, but may be any of foamed resin sheet and non-foamed resin sheet, for example, polyolefin resin sheet such as polyethylene resin sheet and polypropylene resin sheet, polystyrene resin sheet, Thermoplastic resin sheets, such as polyester-based resin sheets, such as a polyethylene-terephthalate-type resin sheet and the modified polyethylene-terephthalate-type resin sheet which provided heat resistance, can be mentioned. Especially, what can endure heating of a microwave oven, for example, a heat resistant polystyrene resin sheet, a polypropylene resin sheet, and a modified polyethylene terephthalate resin sheet to which heat resistance is imparted are preferable.
Moreover, a lamination sheet can also be used as a synthetic resin sheet, For example, the lamination sheet which heat-laminated the film to the synthetic resin sheet, the lamination sheet by co-extrusion method, the lamination sheet by extrusion lamination method etc. are mentioned as a lamination sheet. Can.

  Examples of thermoforming include vacuum forming, pressure forming, vacuum pressure forming, hot plate forming and the like.

  The container body 2 or the lid 3 may be transparent, translucent, or colored such as black or white, but is preferably transparent or translucent so that the inside can be seen. The container body 2 may be colored, and the lid 3 may be different, such as transparent.

  The container body 2 includes a bottom portion 21 having a rectangular shape in plan view and a horizontally-long rectangular shape, and leg portions 22 protruding downward from near the four corners of the bottom portion 21.

As shown in FIG. 1, the bottom portion 21 is formed as a horizontal surface in the form of a horizontally-long rectangular shape in plan view so that articles such as food can be placed thereon.
In the present embodiment, although the bottom surface portion 21 is a horizontal surface, the present invention is not limited to this. For example, it may have a sloped surface, a mountain shape or the like.

The legs 22 are provided near the four corners of the bottom portion 21 as shown in FIG. 2 or 3, and are formed in a shape of a plan view in which both ends of the straight line are bent at an obtuse angle in the same direction. , Bulging downward and provided. The leg portion 22 has a stepped structure, and in the present embodiment, has a two-step structure including the first surface portion 23 and the second surface portion 24.
The first surface portion 23 is formed in a horizontal surface shape, is positioned inside the container than the second surface portion 24 and can be placed on the top surface portion 31 of the lid 3 when stacked on another packaging container 1 is there. The first surface portion 23 and the second surface portion 24 preferably have a shape having a bending portion or a bending portion in a plan view, whereby the strength of the leg portion 22 is enhanced.
The depth of the first surface portion 23 from the bottom portion 21 is preferably 2 mm to 15 mm, particularly 3 mm to 10 mm, depending on the size of the container body 2. The depth of the second surface 24 from the bottom 21 is preferably 1.5 to 3 with respect to the depth 1 of the first surface 23 from the bottom 21.

  The second surface portion 24 is formed in a horizontal plane, is located outside the container of the first surface portion 23, extends downward than the first surface portion 23, and is grounded when the packaging container 1 is placed on a shelf or the like. As a ground plane to Further, the second surface portion 24 has a shape along the side wall surface portion 32 of the lid 3 when stacked on another packaging container 1 and placing the container main body 2 on the upper side of the lid 3.

The side surface 25 of the leg 22 is a vertical surface or an inclined surface. The inner side surface portion 25a between the bottom surface portion 21 and the first surface portion 23 of the container body 2 extends longitudinally in the vicinity of the middle in the width direction and bulges inside the container, as shown in FIG. 2 or 3. A protrusion 26 is provided. By providing the protrusions 26, the strength of the legs 22 can be increased, and the legs 22 can be prevented from being broken.
Although the protrusion 26 is not particularly limited, it may be triangular or curved in cross section. In addition, as shown in FIG. 3, the maximum protrusion width w1 of the protrusion 26 is 0.1 to 2.0 with respect to the minimum width w2 of the first surface portion 23 in plan view. The minimum width of the face portion is preferable, and 0.5 to 1.5 is particularly preferable.
The width of the first surface portion 23 and the second surface portion 24 in plan view is preferably a constant width, and the width of the second surface portion 24 is 1.2 to 3.0 with respect to the width 1 of the first surface portion 23. It is preferable to Further, the vicinity of both ends in a plan view of the first surface portion 23 and the second surface portion 24 may be made wide or narrow.

  In the present embodiment, although the protrusion 26 is provided in a single line in the side surface 25a, the present invention is not limited to this, and a plurality of stripes such as two or three may be provided. For example, it may be provided on the outer side surface 25 b between the bottom surface 21 and the second surface 24 of the container body 2.

  The legs 22 may be provided continuously in the circumferential direction of the container body 2, but it is preferable to provide the legs 22 with appropriate intervals. In the present embodiment, the four legs 22 are provided in the vicinity of the corner of the container body 2, but, for example, two legs 22 may be provided along two opposing edges.

As shown in FIG. 1, the outer edge of the bottom 21 is provided with a side wall 27 that rises vertically, and the upper end of the side wall 27 is provided with a flange 28 that protrudes horizontally outward. It is
A hanging skirt portion 29 is provided at the outer edge of the flange portion 28. On the surface of the skirt portion 29, a fitting portion 29a in which a place is appropriately recessed is formed, and the lid 3 can be fitted.

  A pair of opposing corner portions of the container body 2 is formed in a chamfered shape, and a knob portion 29 b horizontally extending outward from the lower end portion of the skirt portion 29 is formed at that position.

As shown in FIG. 1, the lid 3 includes a top surface portion 31 having a rectangular shape in plan view and a rectangular side wall surface portion 32 extending downward from the periphery of the top surface portion 31.
The top surface portion 31 is formed as a horizontal surface in the form of a horizontally long rectangular shape in plan view, and the four corners are formed in a chamfered shape, and also formed in a step shape so that the first surface portion 23 of the leg 22 rests on the four corners. .

  The side wall surface portion 32 is an inclined surface which extends slightly downward from the peripheral edge of the top surface portion 31, and the second surface portion 24 of the leg portion 22 is arranged along the outside of the side wall surface portion 32.

  The lower end portion of the side wall surface portion 32 is provided with a flange portion 33 that protrudes horizontally outward, and when the lid 3 is fitted to the container main body 2, it is mounted on the flange portion 28 of the container main body 2 is there.

A hanging skirt portion 34 is provided at the outer edge portion of the flange portion 33 and is formed along the skirt portion 29 of the container body 2. Further, on the surface of the skirt portion 34, a fitting portion 34a in which a place is appropriately recessed is formed, and the fitting portion 34a is fitted, and the lid 3 is fitted to the container main body 2.
In the present embodiment, the lid 3 is formed to be fitted to the container main body 2, but the invention is not limited to this. For example, the lid 3 may be formed to be fitted inside and outside. Good.

  A pair of opposing corner portions of the lid 3 is formed in a chamfered shape, and a knob 34 b horizontally extending outward from the lower end of the skirt 34 is formed at that position. It is made to be able to raise it. In a state in which the lid 3 is fitted to the container body 2, the knob 34 b is made to overlap with the knob 29 b of the container body 2.

In the packaging container 1, the contents can be placed on the bottom portion 21 of the container body 2, and the lid 3 can be fitted to accommodate the contents. Since the leg portion 22 has a stepped structure, the leg portion 22 is reinforced and hardly deformed. Further, by providing the protrusions 26 on the legs 22, the strength of the legs 22 is enhanced, the legs 22 are less likely to be broken, and it is possible to support heavy stored items even if they are accommodated.
Since the leg portion 22 is reinforced, the container body 2 is placed on a desk or the like, and when covering the lid 3, the lid 3 is covered while being pressed from above. Under the present circumstances, although the leg part was crushed by this pressing force conventionally, since the leg part 22 of this embodiment is reinforced, it has the intensity | strength which can fully bear and there is no problem in the lid closing operation. It can be carried out.

The packaging containers 1 can also be stacked and displayed in a plurality of stages as shown in FIG.
Under the present circumstances, as shown in FIG. 5, the 1st surface part 23 of the leg part 22 is mounted in four corner vicinity of the top | upper surface part 31, and the circumferential side surface part 25 between the 1st surface part 23 and the 2nd surface part 24 is The outer wall surface portion 32 of the lid 3 is disposed along substantially no gap. Therefore, the packaging container 1 is not easily displaced from the other packaging containers 1, and the other packaging containers 1 can be stably placed.

  In addition, when the packaging containers 1 are stacked, a gap is formed between the top surface portion 31 and the bottom surface portion 21 of the upper container main body 2, and therefore the bottom surface portion is bent even if the bottom surface portion 21 is bent due to the weight of the contents. 21 does not easily touch the lower top surface 31 and does not become unstable.

  Furthermore, when the lid 3 is transparent or translucent, the top surface portion 31 of the lid 3 located below can be visually recognized from the gap between the leg portions 22 in a state where the packaging containers 1 are stacked, Even when the packaging containers 1 are stacked, it is easy to check the contents of the respective packaging containers 1.

  When the packaging containers 1 are stacked, a gap is formed between the top surface portion 31 and the bottom surface portion 21, so that dirt and the like attached to the back side of the bottom surface portion 21 do not move to the top surface portion 31.

  The configuration aspects of the above embodiments are not mentioned as limiting the present invention, and modifications can be made as long as the technical object is in common, and the present invention includes such modifications.

DESCRIPTION OF SYMBOLS 1 packaging container 2 container main body 21 bottom surface 22 legs 23 first surface 24 second surface 25 side surface 25a inner side surface 25a outer side surface 26 protrusion 27 side wall surface 28 flange 29 skirt 29a fitting portion 29b knob portion 3 lid 31 top surface portion 32 side wall surface portion 33 flange portion 34 skirt portion 34a fitting portion 34 b knob portion

Claims (4)

A packaging container comprising a synthetic resin sheet and comprising a container body and a lid,
The container body comprises a leg which bulges downward from the bottom of the container body,
The leg portion is a stepped structure including at least a first surface portion and a second surface portion,
The first surface portion is located inside the container, and can be placed on the top surface portion of the lid,
The second surface portion is located outside the container and extends below the first surface portion, and when the container body is placed on the upper side of the lid, the second surface portion is shaped along the side wall surface portion of the lid.
Packaging container.   The packaging container according to claim 1, further comprising: a protrusion extending in the longitudinal direction and bulging inward of the container on an inner side surface portion between the bottom surface portion of the container body and the first surface portion of the leg portion.   The packaging container according to claim 2, wherein the maximum protrusion width of the protrusion (the protrusion width of the protrusion / the minimum width of the first surface) with respect to the minimum width of the first surface is 0.1 to 2.0. . The packaging container according to claim 2, wherein the protrusion is triangular or curved in cross section.

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